[名词解释] 风蚀蘑菇石
[主观题]砚窝石
[名词解释] 砚窝石
[名词解释] 壁龛
[名词解释] 半圆壁龛
[名词解释] 风蚀柱与风蚀蘑菇
[名词解释] 风蚀
[名词解释] 风蚀地貌
[名词解释] 风蚀谷
[名词解释] 风蚀蘑菇