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Mentawai Material Culture & Craft

Mentawai shaman holding carved wooden bird
Aman Jagaumanai working on his wood carving.

Mentawai Culture

Traditions of the Ancients — A Living Past

Mentawai culture is one of the world’s oldest continuous traditions, rooted in the late Neolithic era and shaped by thousands of years of adaptation to the rainforest environment. Rather than being a relic of the past, it is a living system built on balance — between people and forest, clans and families, and the physical and spiritual worlds that interact in daily life.

At the center of this social world stands the uma, the communal clan house where families gather to share meals, make decisions, and carry out ceremonies. It is also the place where kerei, the community’s shamans, perform rituals that safeguard the soul, restore harmony, and maintain relationships with unseen beings. Life flows outward from the uma to surrounding gardens, sago groves, forest shelters, and the river systems that anchor clan territories.

Mentawai uma from the sky, a traditional clan house
A traditional uma, a Mentawai clan house

Subsistence practices remain diverse and ecologically attuned. Families cultivate taro, bananas, and medicinal plants in mixed gardens, fish the rivers, hunt in the forest, and process sago — the staple starch of the islands. This rhythm is semi-nomadic: while the uma anchors community life, seasonal movements to temporary shelters allow families to harvest forest resources without overburdening any single area.

Mentawai woman fishing in river with net
Teteu fishing for shrimp, frogs and small fish

Social life is strongly egalitarian. Leadership is shared among elders and household heads, and decisions are made through discussion rather than hierarchy. Men and women hold distinct yet complementary responsibilities, and children learn by observing and participating in daily tasks. Values such as reciprocity, respect, and cooperation are reinforced through food sharing, marriage exchanges, hunting partnerships, and ritual obligations.

Mentawai traditional ceremony with indigenous shaman and wife.
Meat of a sacrificed pig is equally distributed over the families of the clan

Underlying all of this is a spiritual worldview that sees humans as part of a wider community of beings — animals, plants, ancestors, and spirits — all possessing souls and deserving of respect. Maintaining balance among these relationships is essential to well-being. Rituals, tattooing, adornments, taboos, and healing practices all serve this purpose.

Even as outside influences increase, the core of Mentawai identity endures. Some traditions adapt, some decline, and others are actively protected by communities determined to preserve their heritage. What remains constant is a deep commitment to living well with the forest, with family and clan, and with the many seen and unseen beings who share their world.

Material Culture

Everyday Clothing, Craftsmanship, Canoes, and Adornments

Mentawai material culture reflects practicality, beauty, and spiritual attention. Objects are made to serve daily needs, but also to please the soul, strengthen relationships, and maintain harmony with the environment.

Clothing

The kabit is the traditional Mentawai loincloth worn by boys and men. Made from the inner bark of the baiko tree, it is peeled, soaked, washed, and then pounded with wooden mallets until it becomes soft, flexible fibre. After drying in the sun, the sheets are beaten again to achieve strength and smoothness.

Mentawai shaman making bark loincloth
Aman Sasali using a mallet to soften the inner tree bark

Naturally pale brown or off-white, the kabit is deeply tied to the forest. For kerei, it is dyed deep orange by boiling it with mangrove bark (toggoro), a colour associated with ritual readiness and spiritual authority.

Mentawai shaman hunting in Siberut rainforest with bow and arrows
Aman Lain scouting during a hunt

Today, boys often prefer shorts, while kerei may pair the bark cloth with woven fabric. Still, the kabit remains a clear marker of tradition — clothing from trees, shaped by hand, and worn close to the skin.

Mentawai shaman boiling tree bark to dye loincloth
Toggoro tree-bark is boiled to prepare the dye for new loincloths

Long ago, Mentawai women wore skirts made from tree bark fiber, using the bark of specific forest trees that could be processed into thin, soft, fabric-like sheets — similar to the tree-bark loincloths still worn by shamans today. With early contact from the outside world, these bark skirts were gradually replaced by textile fabrics. Married women usually wear skirts made from a single piece of cloth.

Mentawai women traditionally dressed for ceremony
Women preparing for a ceremony

Married women usually wear skirts made from a single piece of cloth and often do not wear anything above the skirt; when they do, it is typically a simple tank top, T-shirt or just a bra.

Younger women and girls today often wear simple modern clothing, while traditional styles are preserved and worn mainly during ceremonies and rituals.

Baskets, Containers, and Household Items

Mentawai households rely on a wide range of baskets and containers, made in many sizes and shapes and adapted to specific tasks. Basket-making is a common skill, and the form and material of each basket reflect its intended use. Most baskets are woven from rattan, valued for its strength and flexibility, while others are made from the dried, wide base of sago palm leaves.

Mentawai women with chicken baskets
Teteu putting her chickens in rattan baskets, at the end of the day

Baskets made from the dried base of sago palm leaves are particularly suited for heavy and wet materials and are most often used to carry raw sago pulp from the swamp. The same material is also used to make traditional shaman travel suitcases, known as bakulu, which serve to protect ritual objects and personal belongings during journeys.

Mentawai traditional baskets made from the dried base of sago palm leaves
Large baskets made from the dried bases of sago palm leaves, bound together with rattan

Bamboo is another essential material. Split bamboo containers are used to smoke meat or fish, while closed bamboo tubes store dried foods and medicinal plants. Large bamboo sections were traditionally used to carry water from rivers and creeks to the uma. Although plastic buckets have largely replaced them today, bamboo containers are still used as part of everyday domestic life.

Beyond baskets and containers, many other household items are made from forest materials. Thorny palm-leaf stems function as natural graters for coconut, food preparation, herbal medicines, and hunting poisons. Sago processing relies on large wooden sieves fitted with bamboo and palm-fiber mesh, while long wooden plates (lulak) are used for communal meals. Wooden mallets and carved tools support tasks ranging from beating bark cloth to processing food.

Wood mallet used to soften tree bark for a Mentawai loincloth
A wooden mallet is used to soften tree bark for loincloth

Together, these objects reflect a way of life in which everyday tools are closely tied to the surrounding forest, combining practicality, durability, and knowledge passed down through generations.

Abak: dugout canoe

Dugout canoes, or abak, are lifelines for the Mentawai — vessels carved from the trunks of large forest trees. Each canoe begins with the careful selection of a hardwood giant, chosen both for its physical qualities and the character of its soul.

A Mentawai shaman paddling with his canoe through the Siberut Island rainforest
Mentawai shaman Aman Raiba paddling with his canoe through the Siberut rainforest

Once felled, the trunk is hollowed by hand using axes and adzes, gradually shaped into a long, balanced hull.

Walking and the abak are the Mentawai’s traditional means of transport. Canoes connect distant uma, allow families to visit relatives, bring harvests from gardens, and carry people to ritual gatherings along the river systems.

Mentawai shaman making canoe
Aman Sasali using a traditional adze - ogut - to shape a canoe

Children learn to balance and paddle almost as soon as they can walk, and adults read currents with practiced ease.

Today, many dugouts along larger rivers are fitted with propeller engines  called pompong  their hum replacing the quiet rhythm of paddling. Yet even with this change, the abak remains a symbol of connection — a vessel carved from the forest and guided by its waters.

Ritual Adornment

Adornment is not superficial. It pleases the soul, expresses well-being, and honors community and spirits. During ceremony, bodies become living symbols of harmony, beauty, identity, and readiness.

Mentawai shaman couple in ceremonial attire
Aman & Bai Sasali dressed up for a pululak ritual

Men’s Ritual Adornment

For Mentawai men — especially kerei — ceremonial adornment is a visible sign of spiritual preparedness. Leaves, flowers, beads, and feathers signal a man’s connection to the forest and his role within ritual life.

Mentawai shamans dressing up
Aman Tarik and Aman Sasali dressing up for a ceremony

A leafy headdress decorated with feathers, mother-of-pearl, and flowers sits under the traditional shaman luat headband. Around the neck hangs the tudda, a shaman’s necklace of ancient ochre-colored beads. Beaded lekkau rattan armbands with small brass bells complete the ensemble.
Tattoos, permanent marks of balance and identity, stand out against the simplicity of the bark
kabit.

Women’s Ritual Adornment

For Mentawai women, ceremonial adornment expresses beauty, reverence, and belonging. Skirts are secured with beaded belts set with tiny brass bells, while necklaces and armbands of colorful beads are layered across the chest and arms. Flowers tucked into the hair add fragrance and freshness.

Tattoos on the upper body, arms, and legs are displayed proudly during ceremonies. In major rituals, wives of kerei wear the teteku: a leafy headdress decorated with feathers, beads, mother-of-pearl, and flowers. Some also wear the sinaibak, a colorful striped skirt reserved for ceremonial occasions.

Mentawai woman ceremonial attire
Bai Tarik with her teteku head piece

Adornment becomes an offering of presence — a gesture of respect, vitality, and connection to both the human and unseen worlds.

Craftsmanship and Continuity

Craftsmanship is communal and intergenerational. Skills, tools, and materials are shared across families. Whether weaving baskets, shaping bark cloth, carving an abak, or preparing ceremonial attire, Mentawai craftsmanship reflects close knowledge of forest materials and their practical and ritual uses in daily life.

TITI: Tattoos — Identity, Balance & Beauty

Ink of the Forest — From Dots to Lines

Tattoos, known as titi, are a living language of identity, spirituality, and belonging. Among the oldest continuous tattoo traditions in the world, titi express a person’s relationship with the forest, their community, and the unseen forces that shape life.

Mentawai shaman with tattoos
A Mentawai shaman from the Satepuk clan in west Siberut, showing off his tattoos

Each motif carries meaning. Lines along the arms, inspired by rattan, represent resilience and capability. Patterns on the upper legs echo the form of sago palm leaves, speaking of balance and groundedness. Chest motifs symbolize protective necklaces — ngalou — worn not on a string but permanently on the skin as talismans for the soul.

Traditionally, men receive tattoos on the arms, chest, and thighs; women do not. This distinction reflects differing roles, aesthetics, and forms of spiritual protection within Mentawai society.

Mentawai leg tattoos
The lower legs are usually tattooed last, when someone feels "old"

Titi are not ornaments but safeguards, ensuring recognition by ancestors in the afterlife and helping keep the soul closely aligned with the body.

The tattooing process is slow and deliberate. Before tapping begins, the design is drawn directly onto the skin. Thin strips of soaked rattan, used like stamps, leave smooth guiding lines that mark the placement of each motif.

Mentawai hand-tapping tattoo process on back
Printing the tattoo pattern with a thin strip of rattan

Once the layout is set, the tattoo master works with a sharp thorn or needle fastened to a small wooden stick.

The ink — soot mixed with sugarcane juice — produces the deep black characteristic of titi. With steady, rhythmic tapping, the needle is struck with a second stick, embedding pigment into the skin and building the bold, even lines that define the Mentawai style.

Mentawai hand-tapping tattoo
Hand-tapping tattoos

Tattooing takes place gradually, often over many sessions spread across months or years. It usually begins in adolescence and continues into adulthood, marking different stages of identity and ritual readiness. Rather than serving a purely aesthetic function, titi express a person’s place within Mentawai society and their relationship to the spiritual world, where harmony between body and soul is considered essential.

Sarepak Abak

Lines of Balance — Connecting Worlds

The first and most important tattoo a Mentawai man receives is the sarepak abak — a sacred mark that lays the foundation for all tattoos that follow. It embodies balance: between humans and animals, between the physical and spiritual realms, between the individual and the wider world.

Mentawai Sarepak Abak tattoo
The first tattoo for a Mentawai man is usually on the back, called sarepak abak

A horizontal line stretches across the shoulders. The left side represents the human realm; the right symbolizes the animal realm. For harmony to exist, the line must be perfectly level — a reminder that life depends on maintaining balance between the two.

Crossing the spine runs a vertical line, the tree of life. It links the sky above with the earth below, marking the body as a meeting point between cosmological realms.

Mentawai tattoo called sarepak abak on the back of a shaman
The sarepak abak tattoo - abak means "canoe"

Unlike the many decorative or identity-based titi applied later, the sarepak abak carries a singular meaning. It is not adornment, but essence — an anchor of spiritual equilibrium and a declaration that the person is ready to begin the lifelong journey of tattooing.

In this way, the sarepak abak stands as the core of Mentawai tattooing: a pair of simple lines that hold within them the balance of worlds.

Tooth Sharpening: pasipiat sot

Marks of Beauty & Identity, Shaped with Pain​

Among the Mentawai, ideals of beauty have long been tied to balance, identity, and belonging. One of the most striking expressions of this is pasipiat sot — the sharpening of the upper, and sometimes lower, front teeth into elegant, pointed forms. For women in particular, sharpened teeth are considered a mark of refinement. A smile edged like a shark’s tooth distinguishes a Mentawai woman from outsiders and affirms her place within the cultural world of her ancestors.

Mentawai woman sharpened teeth
Bai Jalamati, with her sharpened teeth

The procedure is understood as a form of transformation. An elder or ritual specialist shapes the teeth using a small chisel or the sharpened tip of a machete, tapping it with a wooden mallet. Without anesthetic, each tooth is reduced gradually, and pain and bleeding are unavoidable. Endurance during the process is expected and is associated with maturity, self-control, and readiness to adopt adult aesthetic norms.

Mentawai shaman with sharpened teeth
Aman Manja - sometimes men also have their teeth sharpened

Though the practice has become rare today, many older Mentawai women still proudly carry these marks, their smiles bearing the legacy of a tradition once celebrated as the height of beauty.

The Legacy of Sharpened Teeth

Embodied Ideals, Lasting Consequences

Like tattoos, sharpened teeth were a way of inscribing cultural values directly onto the body. Yet pasipiat sot also brought challenges that tended to emerge only in later life. The reshaped teeth, with their exposed surfaces and altered structure, are more vulnerable to wear, sensitivity, and decay. In the humid forest environment — where modern dental care is limited — gums can gradually weaken, becoming prone to swelling and bleeding.

Mentawai woman with teteku head decoration
Sharpened teeth are more vulnerable to wear and decay

What began as an expression of beauty and belonging could sometimes cause discomfort later in life. Even so, those who underwent pasipiat sot generally remember it not with regret but with pride; it is regarded as a lasting marker of identity, endurance, and adherence to cultural values.

Uma

House, Community, and Cosmological Center

The uma is the architectural, social, and spiritual heart of Mentawai life. More than a dwelling, it is a small village under a single roof — a place where families gather, where ancestors visit, where spirits dwell, and where the relationships between humans and the unseen world are continuously renewed.

Traditional Mentawai communities do not live in villages. Instead, they live in uma — large communal longhouses where several patrilineally related families reside. Traditionally, an uma may house up to ten related households, all cooperating and sharing responsibilities in daily life. Nowadays, most uma house fewer families, as larger families tend to prefer living in their own households.

Uma Mentawai traditional clan house
Uma, the traditional Mentawai clan house

Clusters of uma are built along riverbanks, sometimes far into the interior where rivers narrow into small creeks. Members of the same clan typically build their uma in the same area, with each house separated by several hundred meters. Different clusters are usually a few kilometers apart. This spacing reflects both social organization and ecological considerations, ensuring access to land, water, and forest resources.

Mentawai uma clan house
A traditional Mentawai uma, the communal clan house

A traditional uma is between 20–30 meters long, 6–10 meters wide, and around 5 meters high. Built on stilts, it stands about a meter above the ground.

Traditionally, the walls are made from the bark of the karai tree, while most of the floor consists of planks from ali ribuk, a palm prized for its exceptionally hard and durable wood. Only the sacred central dance floor is made from solid wooden planks.

The steep palm-leaf roof descends almost to the floor, protecting the household from wind and rain. When well cared for, an uma can last up to 50 years — although many modern constructions tend to age more quickly.

Traditional Mentawai house, called uma
Front of a traditional uma, with stairs leading up to the porch

The placement of each uma is deliberate. Situated near water, surrounded by garden land and forest, it stands within the clan’s leppet, or territory. This land includes gardens, sago groves, hunting grounds, and sections of river — resources shared and managed collectively by clan members. Movement within the leppet — tending gardens, checking traps, visiting relatives, collecting sago — forms the daily rhythm of life.

COSMOLOGICAL ORDER — BUILDING THE UMA

In the construction of an uma, Mentawai ideas about cosmology play an essential role. The orientation of vertical pillars and horizontal beams follows the original growth direction of the trees from which they are made. For pillars, the end that once held the roots is placed toward the ground, while the end that formed the crown faces upward, toward the sky — mirroring the living tree.

Horizontal beams are also oriented carefully. Their root ends are placed toward the rear or right side of the uma, away from the main shrine, the bakkat katsaila. Beams that run the full length of the building are assembled from several shorter pieces whose ends overlap. At these joints, the root end of one beam lies beneath the crown end of the next, always maintaining the correct orientation: the root side toward the earth, the crown side toward the sky. A root end must never cover a crown end.

These arrangements are not merely technical. They are understood to ensure inner harmony within the uma, allowing benevolent forces to remain and inviting human souls to enter, while keeping harmful spirits outside.

Diagram showing the layout of a traditional Mentawai uma with named spaces.
Layout of a traditional uma with Mentawai terminology for the different spaces.

pulai bokat: Veranda — Threshold and Meeting Place

Access to the uma is via a carved tree-trunk staircase, called orat, leading to a raised open platform known as the gare. This porch is used for everyday household tasks such as sharpening machetes and axes, and for storing water — in earlier times in large bamboo containers, and today often in buckets.

From the gare, one enters the roofed veranda, called pulai bokat. Although under the uma’s main roof, the veranda has no walls at the front or sides. The entrance into this space is purposely low, requiring people to bow slightly — a quiet gesture of respect as they enter the communal world.

The floor of the gare and its continuation into the veranda lies one step lower than the rest of the uma’s interior. The lower central section of the veranda floor is called patitikat, the “tattoo place” where traditional tattoos are made. The higher section of the veranda floor, known as tekenia, is where pigs are sacrificed during ceremonies.

Both flanking sides of the veranda are called jairabbak. Here, long benches are built between the main pillars. Family members and guests sit, talk, rest, smoke, or watch daily life unfold. At night, men and visitors often sleep on the veranda, drawn by the airflow and the view toward the river.

Mentawai Shamans smoking in traditional longhouse
Mentawai Shamans enjoying a smoke on the veranda of the uma

This space functions both as a threshold and as a meeting ground. Guests are welcomed here, men gather for discussion, and the first preparations for ceremonies often begin in this open, transitional zone. The veranda connects domestic life with the wider landscape — a gentle opening between forest, river, and the life of the house.

tengan uma: Central Hall — The Pulse of Life and Ceremony

Three large doorways lead from the veranda into the tengan uma, the central hall and beating heart of the uma. These openings can be closed with large hanging panels, called sausau, traditionally made from tree bark but today usually from wooden planks. They are rarely closed, however, and only when the entire community leaves the house for several days, such as when attending ceremonies in a distant uma.

The first half of the central hall, called puiligat, is where most meals are shared, either among family members or with visiting guests. During major ceremonies, this central floor is used to lay out ceremonial attire, and shamans call upon ancestral souls for blessings. When pigs are sacrificed, they are first placed on this floor, with the shamans seated behind the animal, facing the uma’s entrance, waving leaves as they bless the pig and chant petitions to the spirit world.

A large communal hearth sits at the center of the hall. It is used for heating water and for preparing sacrificial pigs and chickens during rituals. Above the hearth, a large wooden frame holds firewood, coconut spoons, bamboo tongs, sago-leaf fans, and bamboo containers. Around this hearth, daily life unfolds: meals are prepared, food is shared, and stories are told.

mentawai uma clan house inner room
The tengan uma, the first inner room of a traditional uma

The side walls of the central hall were traditionally made from the strong bark of the karai tree, though today wooden planks are more commonly used. Along these walls hang a variety of baskets and large cast-iron pans used to boil the meat of sacrificed pigs. Men, older boys, and guests sleep along the walls, laying out mats at night and storing them away during the day.

Along the flank sides of the rear half of the central hall, an area known as laperat, large wooden frames are suspended from the rafters and fitted with hooks. The frame on the left side is used to store sleeping mats, mosquito nets, large wooden plates (lulak), and other communal belongings. The frame on the right side is reserved for ritual items: the shamans’ sacred boxes (salipak), travel suitcases (bakulu), bows and arrow containers, and ceremonial ornaments.

The rimata, the spiritual leader of the community, is the only man with a dedicated sleeping place in the central hall. This sleeping area lies near the back wall on the right side of the hall, closest to the pillar to which the uma’s main shrine, the bakkat katsaila, is attached on the other side of the wall in the rear chamber.

During rituals, the central hall undergoes a transformation. The open floor between the hearth and the back wall, known as puturukat, becomes a ceremonial ground where the kerei dance, chant, and communicate with the unseen world. This dance floor is designed as a large percussion instrument. The floorboards rest loosely on longitudinal beams along each side, with a third beam running lengthwise beneath the center, separated by a small gap. When the shamans dance and rhythmically stamp their feet, the planks strike this central beam, producing a resonant, echoing beat that complements the rhythm of the drums.

Here, beneath the high thatched roof, the everyday and the sacred are woven together. The central hall is a living stage where community, ancestors, and spirits meet.

BAT SAPOU: Rear Chamber — Sanctuary of the Uma

A single door leads from the central hall into the bat sapou, the rear chamber and most sacred space of the uma. Traditionally, a jaraik — a carved wooden figure incorporating a monkey skull — was mounted above the entrance. It guards both this inner room and the community’s primary shrine, the bakkat katsaila.

The bakkat katsaila is a sacred basket filled with ritually important leaves and fixed to the uma’s most sacred inner post, positioned on the right side of the entrance. It embodies the connection between the physical and spiritual realms — earth and sky — and serves as the house’s guardian and mediator, drawing in beneficial forces while keeping harmful ones at bay.

Rear chamber traditional Mentawai uma clan house
The bat sapou, the rear chamber of a Mentawai uma, with two hearths against the back wall

Along the back wall stand two large hearths used for daily cooking. Above them hang storage racks filled with bamboo tubes, firewood, and bamboo containers of smoked meat. Women and young children sleep along the side walls, close to the warmth of the hearths. The only woman with a designated sleeping place in the rear chamber is the wife of the rimata. She sleeps on the left side, directly beside the wall separating the central hall from the rear chamber.

hearth traditional Mentawai uma longhouse
A hearth in the rear chamber of a traditional uma

The rear chamber forms the ritual core of the household. Here, the beginning and end of ceremonies are announced to the unseen world, blessings are prepared, and ancestors are invoked. The space is intimate and powerful — a place where the boundaries between worlds lie closest.

Small doors along the sides open onto narrow platforms used for washing dishes and performing household tasks. At the back, a larger door leads to a broader platform where the semi-domesticated pigs kept beneath the uma are fed.

Community Life Under One Roof

The uma is a small, cooperative community built on solidarity. There is no formal leader; guidance comes from elders, and decisions are made collectively in communal meetings. Equality between men and women is central, and every household is, in principle, self-sufficient — though in practice, most tasks are undertaken together.

A single family is too limited to manage daily life alone. Heavy work requires assistance; sickness or the death of a parent demands communal support. Children are raised not just by their parents but by all adults in the uma.

Traditional Mentawai sakuddei clan uma siberut island
The Sakuddei uma

Sons inherit their parents’ property, while married daughters join the uma of their husbands. Until a young woman marries, her brothers are responsible for her wellbeing.

For the Mentawai, it is the uma — not the nuclear family — that forms the true social unit. Daily life, ritual life, and the practical necessities of forest living all depend on the shared strength of the community beneath this single, sprawling roof.

Paths of Life - Living Arteries

Trails, Rivers & Movement Through the Forest​

For the Mentawai, movement follows the contours of forest and river. The waterways are their highways — broad, winding channels navigated in dugout canoes carved from single massive trees. These vessels carry families to visit relatives, harvest sago, tend gardens, attend ceremonies, and transport goods between distant uma and the coast.

mentawai shaman in canoe on river
Shaman Aman Raiba in his canoe on the Gulubbek River

On land, narrow footpaths run through the forest, linking gardens, hunting grounds, and settlements. These trails cross ridges, follow streambeds, and pass beneath dense canopy. Used daily and often walked barefoot, they are learned through long familiarity, with routes remembered in detail over time.

This knowledge extends beyond practical navigation. Trails and rivers are understood as shared spaces inhabited by humans as well as spirits. People move through them with care, aware of unseen beings associated with stones, trees, and water.

Mentawai shamans hunting in rainforest
Small paths through the rainforest connect uma, rivers, forest and plantations

Together, rivers and forest paths form the living infrastructure of Mentawai society. They are not only routes of travel but pathways of relationship — connecting people to their kin, their food, their ceremonies, and the forest world that sustains them.

Iron Tools

From Stone to Steel — Transforming Work and Craft

For most of their history, the Mentawai shaped their world with stone. Early communities used axes, adzes, and blades crafted from stone — tools suited to felling small trees, carving canoes, and opening the tough pith of sago palms. These tools tie the Mentawai to a deep Austronesian and Neolithic heritage, and archaeological finds on Siberut closely resemble stone tools used in Polynesia and Melanesia.

Metal tools arrived only through outside contact. Traders, sailors, and later colonial forces introduced iron and steel objects that gradually replaced stone. Axes, machetes, and metal adzes transformed daily work: clearing forest paths, building uma longhouses, shaping paddles, and carving canoes all became far less laborious.

The shift unfolded slowly and unevenly across the islands, but by the twentieth century, metal had become central to most craft and subsistence tasks.

Mentawai shaman making dugout canoe
An iron adze - ogut - used to shape a canoe

Among these metal tools, only one can truly be considered a Mentawai creation: the balugui.
This small, curved knife is fashioned from the repurposed tip of a machete — trimmed, sharpened, and set into a bent rattan or wooden handle. Despite its humble origin, the balugui is a versatile and highly valued tool. With it, Mentawai craftsmen split rattan for weaving baskets, shape bows, carve tobacco containers, and refine wood carvings found around the uma and used around the uma and in ritual objects.

Its compact form makes it ideal for fine, controlled work, and many craftsmen own a personal balugui for the delicate tasks it excels at.

Mentawai traditional balugui knife tool
The balugui is used for more refined wood carving

The introduction of metal did not alter Mentawai aesthetics or craftsmanship; it simply expanded what was possible. Household objects, ceremonial items, and even children’s toys continued to follow long-established motifs — but iron allowed these forms to be produced with greater ease and finer detail.

Mentawai shaman cutting massive tree
Aman Manja using an axe to fell a giant tree, which will be used to make a dugout canoe

In recent decades, chainsaws have entered the toolkit. Their harsh rhythm echoes along the river valleys during construction or logging, marking another step in the long journey from stone blades to steel teeth. For felling large trees or hollowing canoe logs, they save significant time.

Mentawai shaman cutting a tree with a chainsaw
Aman Sasali using a chainsaw

Another benefit of the chainsaw is how it has changed the use of trees. In the past, a single medium-sized tree would be cut down to make just one pillar. Today, one large tree can be used to produce all the main pillars needed for a new uma, reducing the number of trees that must be felled.

Yet even as new technologies appear, many Mentawai still rely on the machete and the ever-present balugui — tools that link past and present in the daily work of shaping life in the forest.

Tuddukat — hollow wooden drums of communication

The Speaking Voice of the Uma

To announce important events to the entire clan and neighboring communities, the Mentawai use the tuddukat — four hollowed wooden drums, each carved from a different-sized log and mounted together on a wooden frame. They are placed high up in the uma above the entrance, or on a dedicated terrace beside the house. When struck with wooden beaters, their deep, layered rhythms travel far through the rainforest. The sound rolls across valleys and hills and echoes along the riverbanks, carrying messages to all who live within hearing distance.

Mentawai shaman playing tuddukat communication tool
Aman Manja beating the tuddukat

Every uma has its own tuddukat, slightly different in tone and resonance. Just like a human voice is recognizable, each household has a distinct sound. People know immediately which uma is calling — even before they understand why.

A Language of Rhythms

The tuddukat does not simply make noise — it speaks through rhythm. Different beats announce different events, and anyone familiar with these rhythms understands the message long before they arrive at the uma. One rhythm tells of a death in the family, another celebrates a successful hunt, and yet another announces a major ceremony or the sacrifice of a large pig.

Through these rhythmic messages, the tuddukat becomes far more than an instrument: it is communication system, social signal, ritual tool, and emotional expression all at once.

Smoking

A Breath of the Forest — Smoke as Companionship​

Ubek — hand-rolled cigarettes — are woven gently into daily Mentawai life. Tobacco or dried, sliced taro leaves are wrapped in young banana or nipah palm leaves, sun-dried to make natural, aromatic papers. The smoke is light and earthy, carrying the scent of forest.

Men often keep a smoldering piece of coconut spathe glowing at all times, ready to ignite a fresh roll. Sharing ubek is an act of hospitality and companionship, offered to visitors and exchanged during conversations, ceremonies, or moments of rest.

Mentawai shaman smoking traditional tobacco cigarette.
Aman Tubuh using a smoldering coconut spathe to light his traditional smoke, tobacco rolled in a dried banana leaf wrapper

Change, however, is underway. Many young Mentawai now prefer factory-made cigarettes — easier to carry, easier to light, and milder in taste. The shift marks a subtle transition from a self-made, forest-based practice to one shaped by outside goods.

Jaua — Tobacco Container

The jaua is the traditional Mentawai tobacco container used by men, carved from a coconut shell with a wooden or coconut-shell lid. Many are decorated with incised designs, often featuring the bilou — the Mentawai gibbon — an animal closely associated with the forest and with ancestral stories.

Traditional Mentawai tobacco container made from coconut shell
Hansip carving a new jaua, a traditional tobacco container made from a coconut shell

Men wore the jaua on a rope or rattan cord around the waist, keeping tobacco close at hand and ready to share.

Traditional Mentawai tobacco container made from coconut shell
Jaua: a traditional tobacco container made from coconut

Women traditionally used decorated bamboo containers, which held tobacco along with betel nut and its ingredients.

Today, the jaua has been largely replaced by small plastic bags — quiet symbols of a culture adapting to a rapidly modernizing world.

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