Fig. 1
Source from [81]
The present traditional silo-cave villages: a the aerial view of Beiying Village, Zhangbian Town, Shanzhou District; b the aerial view of Qucun Village, Zhangbian Town, Shanzhou District; c the abandoned silo-cave of Zhangbian Village, Zhangbian Town, Shanzhou District; d the renovated silo-cave of Qucun Village, Zhangbian Town, Shanzhou District; e building plan of silo-cave (East); f building plan of silo-cave(South) (photos a & b by Mingyun Zhang; photos c &d by author; e & f