The gooey appearance of a rock wall in Manu Nui cave was formed when the lava chemistry started to change and the iron contained in the lava oxidized into various minerals. Manu Nui is ...
Cave pearls, a rare and beautiful phenomenon, are formed in limestone caves through the deposition of concentric layers of ...
The Marble Caves are natural rock formations with curved walls covered in swirling mineral patterns. They sit on the shores of General Carrera Lake, a glacial lake in southern Chile. The lake ...
It is a large, vaulted, north-facing cave 100 m long x 40 m wide x 33 m in height, formed in sandstone ... first to recognize the cultural significance of the cave and the other rock shelters in the ...