Geometric design on mud brick dwellings in Tiebele, Burkina Faso, West Africa, Africa

Traditional mud-covered dwelling in a Himba village in the Kunene Region, formerly Kaokoland, in the far north of Namibia, Africa

Young Himba woman standing outside her traditional mud-covered dwelling in a Himba village in the Kunene Region (formerly Kaokoland) in the far north of Namibia

Geometric designs painted on traditional houses in small village in Tiebele area of Burkina Faso, West Africa, Africa

Desert-dwelling Elephant, (Loxodonta africana africana), Dry River, Hoanib, Kaokoland, Namibia

Cooking stove in interior of a Navajo dwelling in which three interlocking pinuon pine trunks support conical stack of mud covered logs, Arizona, United States of America, North America

Young Himba woman inside a traditional mud dwelling hut wearing traditional dress and jewellery and with her skin covered in Otjize, a mixture of butterfat and ochre, Kunene Region, formerly Kaokoland, Namibia, Africa

Smoke hole and doorway in Navaho (Navajo) dwelling of mud covered pinyon pine logs, Arizona, United States of America (U.S.A.), North America

A mud Hut in Volcanoes National park. Typical dwelling for the people who live in the mountains of Rwanda. Volcanoes National Park, Virunga mountains, Rwanda, East Africa

Close-up view of Dammuso architecture, a typical, stone house structure on Pantelleria Island, Pantelleria Island, Trapani, Sicily, Italy

Close-up view of Dammuso architecture, a typical, stone house structure on Pantelleria Island, Sicily, Italy

Window in the mudbrick fortress built by the Mamluks; El Khandaq, Northern State, Sudan

Maasai woman elder wearing traditional clothing stands at entrance to her mud hut in the Ngorongoro Conservation Area, Tanzania