5726earthen architectureTTen-USVocabulário Colaborativo em Artes e Arquitetura active approved earthen architectureBuildings and other architectural structures constructed wholly or primarily of earth. For engineering works, such as trenches, created in the earth, use "earthworks (engineering works)." For structures built on a hillside rather than into it, use "hillside architecture." For structures built under the surface of the ground, but not made primarily of earth, use "underground structures.

Source: AAT

http://vocab.getty.edu/page/aat/300379486

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