"earthen architecture"@en . . . . "earth architecture (built works)"@en . "300379486" . "architecture, earthen"@en . "2012-09-26T16:27:40"^^ . "earth construction (built works)"@en . "2016-03-02T08:23:36"^^ . "Buildings 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.\""@en .