The limestone karst is also known as the terrain cácxtơ . The limestone mountains are jagged. Rainwater can penetrate into the interstitial, crevasse, erosion of rock forming large and long caves.
Limestone is a collective term for a group of sedimentary rocks that consist of at least 50 percent calcite, a mineral formed of calcium carbonate. If some of the calcium becomes replaced by magnesium, the resulting calcium magnesium carbonate rock is called dolomitic limestone. Limestone has a variety of origins and may be precipitated in water or secreted by marine organisms such as coral; it also may consist of the shells of dead marine organisms.
