The most common process by which limestone caves form involves carbonic acid — or weakly acidic groundwater — as the primary agent. When carbonic acid contacts limestone, it dissolves minerals in the ...

The flooding, brought on by 35 inches of rain in eight days, sent a wall of water more than seven feet tall over the 1,250-foot wide spillway and into a narrow valley behind Canyon Dam. The ...

South West China, Myanmar and Northern Vietnam contain one of the oldest exposed outcrops of limestone in the world. Within this area are thousands of caves and gorges. It is only recently that ...

A is a limestone pavement which is formed when the joints in the limestone are dissolved away by the rainwater. Limestone is dissolved because rainwater is a weak carbonic acid. The joints which are ...