detail of a mountain crest very indented and cavernous. mountain, rock, grotto.

apennine apennines apex beaten calcareous cavern cavernous cilento clayish conglomerate crest crust era face fossil geological geology geomorphology grotto hollow igneous indented italian italy jagged jaggy layers limestone massif metamorphic mineral mineralogy mountain mountaintop mudrock outcrop peak rock rough salerno sandstone sediment sedimentary sedimentation strata summit surface texture weather weathered