Bhunga Houses of Kutch: Round Mud Homes Built for Earthquakes

On the morning of 26 January 2001, the ground in Kutch shook with one of the most destructive earthquakes in India's recorded history. Across the district, concrete apartment blocks pancaked and stone houses split and fell. Yet in the villages of the Banni grasslands, reports from the days after described something that surprised many engineers: rows of round mud huts — the bhungas that the communities of Kutch had been building for generations — standing, many with little more than cracked plaster, while far costlier buildings nearby lay in ruins. The bhunga had not been designed by a seismic engineer. It had been refined by people living on a shaking, scorching land, and it had quietly learned to ride a quake.

It is tempting to romanticise this, and just as easy to dismiss it — a mud hut, after all, is not a monsoon-proof, termite-proof, lockable modern home. Both reactions miss the point. The bhunga is a piece of vernacular engineering whose logic is worth understanding on its own terms: why a circle, why mud walls that thick, why a thatch roof that light, and what a contemporary architect can honestly take from it without pretending a village hut is a villa. This article looks at the form, the construction, the decoration, the climate performance and, above all, the seismic behaviour of the bhunga, and then at what survives the translation into modern practice.

The facts here are drawn from the well-documented building tradition of Kutch and from the widely reported performance of these houses in 2001; where a specific detail varies from village to village or community to community, this guide describes it qualitatively rather than inventing a precise figure. The bhunga is a living tradition, not a museum piece, and its measurements are a range, not a standard.

What a bhunga is

A bhunga is a circular, usually single-room house. Its walls form a cylinder of mud, mud brick or a timber-and-mud frame, typically somewhere between about three and six metres across, rising to a height a little above a person before the roof begins. On top sits a separate, lightweight conical roof: a cone of wooden rafters radiating from a central point, covered with layers of grass thatch tied down in bundles. The walls are thick — often a few hundred millimetres — which makes the inside cool and dim, and the single doorway and small windows are kept modest to keep out heat and dust. A family compound is usually several bhungas grouped together, each a sleeping or living room, with cooking and gathering happening in the shaded space between them.

Why the round, low, light house rides a quake

The bhunga's earthquake resistance is not one trick but several working together, and each follows from its shape. The first is the circle itself. An earthquake pushes a building sideways, and a rectangular building concentrates that force at its corners, where walls meet at right angles and tend to split apart. A circle has no corners. A lateral push on a cylindrical wall is carried around the ring as a kind of hoop action, shared by the whole wall instead of tearing at a weak junction. The continuous curved wall is inherently more stable against shaking than a box of flat walls.

The second is mass and height. The force an earthquake puts into a building grows with the building's weight and with how high that weight sits. A bhunga is low and its heaviest element, the mud wall, sits low to the ground, so its centre of gravity is low and the inertial force a quake can generate is modest. The third is the roof. A heavy concrete or stone roof is the most dangerous thing in an earthquake, because it is a large mass held up high, and when it falls it kills. The bhunga's roof is a light cone of timber and thatch that sits on the wall almost like a lid; it adds little weight up high, and in the rare case it is dislodged, thatch is far less lethal than a slab. The fourth is the material. Mud and timber are not brittle in the way unreinforced brittle masonry is; the wall can craze and crack and still stand, giving warning and holding together where a stiff, brittle wall would shatter.

None of this makes the bhunga magic, and it is worth being honest about the limits. A poorly built or badly maintained earthen house is not safe simply because it is round; a wall undercut by damp, a plinth that has eroded, or a roof frame that has rotted will fail like any neglected structure. The bhunga's good showing in 2001 was the reward of a form built and cared for as its tradition intends, not a guarantee that any mud hut will survive a quake. The real lesson is a general one that engineers state in every code: a building does best in an earthquake when it is regular in plan, low, light on top, well tied together and made of materials that bend before they break. The bhunga simply reached that answer by long trial on shaking ground, centuries before the mathematics of it was written down.

How it is built

A bhunga is built from the ground it stands on. It begins with a raised plinth of rammed earth or stone that lifts the floor above the ground so that rain and runoff drain away from the walls — the first defence of any earthen building, because water, not earthquakes, is what usually destroys mud construction. On the plinth rises the cylindrical wall, built either as solid mud or mud brick laid in courses, or as a frame of timber posts and woven branches (a wattle) packed and plastered with mud and dung (the daub). The wall is plastered smooth inside and out and renewed each year. The conical roof is framed separately: rafters lean in to a central apex, a ring of horizontal members ties them, and bundles of grass thatch are lashed on in overlapping layers to shed rain.

Lippan kaam: the mirror-work inside

The bhunga is plain outside and dazzling within. Its interior walls are the canvas for lippan kaam, the mud-relief and mirror-work craft of Kutch: raised patterns are modelled in a mix of clay and dung directly on the wall — swirling creepers, peacocks, camels, geometric borders — and small mirrors are pressed into the relief so that in the low light of an oil lamp the whole room glitters. The craft is practical as much as beautiful; the relief strengthens and smooths the plaster, and the mirrors multiply what little light enters. It is one of the clearest examples in Indian building of decoration and construction being the same act, and it is why a bhunga interior, for all the humility of its materials, feels rich. The tradition has since travelled far beyond Kutch, appearing as feature walls and art panels in homes across India and in the studio's own Gujarati-themed interiors.

A house of the Banni grasslands

The bhunga is not an orphan form; it belongs to a place and a people. It is the characteristic house of the Banni, the broad belt of grassland in northern Kutch that fringes the Great Rann, and of the pastoral and artisan communities who have lived on that difficult land for generations, herding, weaving, embroidering and building. The house grew out of exactly what that landscape offers and withholds: earth and grass in plenty, timber and stone in short supply, fierce heat, scarce water, and ground that shakes. Every feature of the bhunga is an answer to one of those conditions, which is why the form is so consistent across the region and so stubbornly well suited to it.

Building a bhunga has traditionally been a shared act rather than a contract. The structure — plinth, wall and roof frame — is often raised by the men of a family and their neighbours, while the mud plastering and the lippan decoration that follows are commonly the work of the women, who pass the patterns and the skill down the generations. The house is not finished once and forgotten; it is renewed, the plaster refreshed and the thatch repaired, as a matter of ordinary seasonal care. That cycle of maintenance is part of why earthen houses last: a bhunga that is looked after can stand for a very long time, while one that is abandoned returns to the earth it came from within a few years. The tradition is centuries old, and although concrete has spread through Kutch as everywhere else, the bhunga endures both as a living home and as a form that designers and institutions now study deliberately.

Built for the desert heat

Kutch is one of India's hottest and driest regions, with blazing days, cold desert nights and dust-laden winds, and the bhunga answers all three. The thick mud wall is a slow thermal store: it absorbs the day's heat on its outer face and releases it only slowly, so the interior stays cool through the afternoon and gives back warmth into the cold night — the same thermal-mass principle a modern architect uses with a cavity wall, achieved here with earth. The small openings keep the hot, dusty wind and the glare out, while still allowing a little cross-ventilation when the door and windows are opposed. The thatch roof insulates far better than a bare concrete slab, which would bake the room below, and its pale, matt surface does not store heat the way dark concrete does. The result is a house that is genuinely comfortable in a brutal climate using only earth, grass and timber, with no fan, no cooler and no energy spent on cooling at all — a performance that a fully air-conditioned modern home in the same desert struggles to match on its energy bill.

The bhunga today

The bhunga is not frozen in the past. After 2001, its reputation as an earthquake-wise form drew fresh attention, and builders and institutions have adapted it in two directions. One keeps the earthen tradition but improves it with the details that modern codes recommend for earthen buildings — a stronger, damp-proof plinth, a continuous timber or light ring at the top of the wall to tie it together, better protection against rain, and careful maintenance — so that the house keeps its climate and seismic virtues while lasting longer. The other borrows the idea rather than the material: circular or curved plans, low masses and light roofs built in contemporary materials, in resorts, retreats and homes that want the calm and the cross-ventilation of the round room. Both are legitimate; what matters is honesty about which one is being built.

What to borrow, and what to leave

• Borrow the circular or curved plan where it suits the room — it is calm, well-ventilated and inherently stable.
• Borrow the principle of keeping mass low and roofs light, which helps any building in a seismic zone.
• Borrow the thermal-mass idea for hot-dry sites: thick or insulated walls, small sun-side openings, a shaded roof.
• Borrow lippan-inspired relief and mirror-work as an interior feature, honouring the craft and its makers.
• Do not assume mud alone is enough for a modern home — plan for water, maintenance, security and services.
• Do not copy a vernacular house without a structural engineer; Kutch is in Zone V and any new build must meet IS 1893:2016.
• Do not treat the bhunga as decoration only — its lesson is structural logic, not a thatched-roof style.
• Protect any earthen element from rain with a raised, damp-proof plinth and generous roof overhangs.

Frequently asked questions

What is a bhunga house?

A bhunga is the traditional circular, single-room house of the Kutch region of Gujarat, especially the Banni grasslands. It has thick cylindrical walls of mud, mud brick or wattle-and-daub, a separate light conical roof of timber and grass thatch, and interiors decorated with lippan kaam — raised mud relief set with small mirrors. Families usually build several bhungas together as a compound.

Why do bhungas resist earthquakes so well?

Their round shape has no corners to split, and lateral earthquake forces run around the circular wall as hoop action rather than tearing at a junction. The walls are low, keeping the building's mass near the ground, and the roof is a light cone of thatch that adds little weight high up and is far less dangerous than a concrete slab if it is dislodged. Together these made many bhungas perform notably well in the 2001 Bhuj earthquake.

What is lippan kaam?

Lippan kaam is the mud-relief and mirror-work craft of Kutch. Patterns are modelled in raised relief from a clay-and-dung mix directly on the interior walls, and small mirrors are pressed in so the room sparkles in low light. It both strengthens the plaster and multiplies the light, and it has become popular far beyond Kutch as a decorative feature-wall technique.

Are bhungas still built today?

Yes, both in their traditional earthen form and in improved versions that add a damp-proof plinth and a continuous tie at the top of the wall for durability and codified earthquake safety. The round, low, light idea has also been adapted into contemporary buildings in modern materials. Any new construction in Kutch, which lies in the highest seismic zone, must be designed to current codes by a qualified engineer.

Can I build a modern home in the bhunga style?

You can borrow its best ideas — a circular or curved plan, low mass, a light roof, thick or insulated walls for hot-dry comfort, and lippan-inspired interiors. But a modern home also needs waterproofing, security, services and maintenance that a village hut does not, so treat the bhunga as a source of structural and climatic logic, and have the design engineered to code rather than copied.