Dwelling with the Hills: Traditional Mro Architecture as Cultural Expression

Traditional Mro (Mro) architecture, belonging to one of the oldest indigenous communities of southeastern Bangladesh, reflects a dynamic cultural expression shaped by ecological knowledge, kinship structures, spiritual beliefs, and communal values. Mro houses—referred to as kim—are constructed from bamboo, timber, and thatch, encoding systems of knowledge transmitted across generations. Central architectural zones such as the kimma (private interior) and kim-tom or cholak (public multifunctional area) demonstrate a deep integration of spatial logic with social meaning. Mro architecture functions as a living, ritualized practice that embodies the community’s worldview, environmental ethos, and cultural resilience.

Materials and Building Techniques

The Mro house, or kim, is almost exclusively constructed using organic materials available from the surrounding forest. The house is raised on stilts—a feature that serves both functional and symbolic purposes. Key materials include:

Bamboo: used for flooring, walls, partitions, mats, storage baskets, and even doors.

Timber logs: used for vertical posts and structural support.

Thatch or grass leaves: used for roofing.

Bamboo thongs or rattan: used instead of nails to tie structural elements together.

The widespread use of bamboo is not merely utilitarian; it reflects an ecological ethos, with the forest providing materials for shelter, fuel, food, and everyday domestic needs.

The flooring is particularly remarkable: built on three to four layers of split bamboo and woven grid lattices, it creates a strong, resilient platform that can withstand heavy daily use.

Spatial Composition: The Kimma, Kim-tom, and Char

The architectural vocabulary of the Mro people reflects a deeply layered understanding of space, social order, gender roles, and ecological practicality. Each architectural element within the kim (house) is not just functional but embedded with cultural meanings—often defining who may enter, sleep, or perform certain activities in a space. The names of these spaces are rooted in the Mro language and reflect an indigenous cosmology and way of life shaped by forest environments, communal bonds, and ancestral traditions.

Kimma: the private domain, typically used for sleeping, storing grain, and performing intimate rituals. Entry into the kimma is restricted and can only be accessed through the kim-tom.

Kim-tom or Cholak: the multipurpose communal area where cooking, social interaction, and hospitality take place. It also serves as the space for guest reception and communal sleeping in some contexts.

Char: the open verandah in front of the kim-tom, elevated and accessible via a notched tree trunk ladder. The char is used for food drying, washing, and everyday domestic work.

Taklak: A private room specially constructed with bamboo for elderly men and women. No one else is permitted to sleep here, emphasizing respect and care for elders.

Kimret: An open sleeping space located at one end of the main house. Only men are allowed to sleep here, marking it as a male-designated zone.

Chiyamong: A designated space for guests to sit and sleep when visiting. Hospitality is central to Mro life, and this area reflects that value.

Undong: Situated at the opposite end of the house, this is where unmarried girls or women sleep. Men are strictly prohibited from entering this zone.

Taaping: A raised, clay-smeared hearth constructed like a leveled field bund. A three-legged stove (sikkoya) is placed atop for cooking.

Tuikrok: The corner of the house where drinking water is stored, often in bamboo or clay containers.

Kimplot Riya: A compartment or elevated shelf where agricultural seeds are stored safely for the next sowing season.

Chapam: A bamboo or wooden storage unit specifically used for storing paddy or unhusked rice.

Taaping: A smaller, specially designated stove area built exclusively for the use of husband and wife.

Kimlak: The inner chamber of the house used as the marital bedroom for husband and wife.

Chualak: A space used to store root vegetables like sweet potatoes, pumpkins, and bottle gourds—often suspended for air drying.

Char or Thuluk: An open platform or space used by women during childbirth, usually during nighttime for privacy and cooling.

Donglu or Pongproya: A designated corner or rack outside or near the entrance for keeping sandals, often signifying the boundary between outside and sacred indoor space.

Dong: A carved, inclined ladder made from a single log with notches, used to access the raised floor of the house.

Nangkhor: A specific area used for threshing or processing paddy during the rainy season, often sheltered but with enough ventilation.

Gender and Space

Gender roles within Mro society do not follow the hierarchical, gender-segregated patterns common in many patriarchal systems. Instead, both men and women engage actively in domestic and communal spheres.

Men participate in guest hospitality, cleaning, and sometimes cooking.

Women engage in agriculture, water-carrying, wood collection, and house maintenance.

The kimma is not “the woman’s domain,” nor is the kim-tom a purely masculine or social space. The division is not gendered but functional and ceremonial. Privacy, in Mro society, is demarcated more in terms of insider-outsider relationships rather than male-female binaries.

The Mro House as a Ritual Structure

One of the most striking insights from the research is the ritual significance of architectural spaces. The kim is not just a dwelling—it is a sacred site where both everyday life and spiritual transactions unfold.

Examples of ritual use include:

• Sacrificing chickens or pigs in the kimma to appease ancestral spirits or to ward off illness.

• Making offerings of rice or meat in the kim-tom when the first produce of the year is brought home.

• Hosting go-hotta (cattle sacrifice) events in front of the char for community healing or celebration.

These events transform ordinary household spaces into temporary sacred spaces. The architectural boundaries between sacred and profane are thus fluid and cyclical.

Artifacts and Symbolic Material Culture

Inside the kim, material possessions are few but telling:

• Bamboo baskets are tied to vertical posts and kept above floor level.

• Pots for brewing rice beer (imported from neighboring Bengali markets) are neatly arranged in corners.

• Mats, hewing knives, and mortar-pestles are carefully stored and only brought out when in use.

• Carved bamboo sticks sometimes demarcate zones within the kim-tom, used for seating or sleeping.

There is a clear ethic of aesthetic minimalism—one that reflects both ecological adaptation and Buddhist influence, emphasizing impermanence, utility, and simplicity.

Settlement Patterns and Social Order

Mro hamlets (paras) appear randomly scattered across hilltops, but a deeper social logic underpins their spatial arrangement. Proximity to water sources, forest access, and clan affiliations determine where houses are built. In times of ecological stress (such as the drying of a jhiri or stream), entire hamlets may shift location.

Within the hamlet:

• Houses are built in a uniform typology, with no display of wealth or hierarchy.

• Even the karbari’s house mirrors the others, indicating the egalitarian structure of Mro society.

• Single-block houses are observed among elderly or single-member families, reflecting adaptive flexibility in house design.

Architecture and Cultural Resilience

With the slow advance of roads, market access, and NGO activity, changes are becoming evident. In some hamlets, corrugated tin roofs, cement floors, or plastic partitions are replacing traditional materials. However, these imported elements often clash with the Mro spatial and ecological logic.

While modernization brings undeniable conveniences, it also poses serious threats:

• Disruption of sustainable material cycles

• Erosion of communal construction practices

• Loss of spiritual and symbolic meaning of space

• Weakening of ritual life embedded in the architecture

The mro thinks that the new houses are not for their hearts, because they are not alive.

The Mro architecture represents a dynamic system of knowledge in which ecological understanding, social cohesion, and ritual practice are inseparably intertwined. The spatial and material logic of the kim exemplifies how indigenous communities create built environments that are simultaneously functional, symbolic, and culturally resonant. Preserving and documenting this heritage is essential for sustaining Mro cultural identity and for recognizing the sophistication of traditional knowledge systems in the hills of southeastern Bangladesh.