Fig. 13: Weathering forms of the four grottoes.
From: Petrophysical and mechanical characterization of sandstones from different grottoes in China
a Yungang Grottoes, b Tianlongshan Grottoes, c Leshan Giant Buddha, and d Dazu Rock Carvings.
Fig. 13: Weathering forms of the four grottoes. | npj Heritage Science
