宁夏的须弥山石窟和石空山石窟，便是古代文明的留存。
The grotto art on Xumi mountain and Shikong mountain are remains of an ancient civilization .
须弥山石窟，在固原县西北约60千米的须弥山中。
The Xumi Grottoes are located about 60 km northwest of the county seat of Guyuan .
须弥山石窟须弥山石窟须弥山石窟