Todays wallpaper: "Cave explorer"
Here are some interesting facts about caves:
- The deepest documented cave is Voronya Cave in Georgia, at 7,208 ft. (2,197 m).
- The world’s 3 longest documented cave systems are Jewel Cave, South Dakota, USA, 267.6 kilometers (166.3 miles), Sistema Sac Actun/Sistema Dos Ojos, Mexico, 319 kilometers (198.2 miles), and Mammoth Cave, Kentucky, USA, 651.8 kilometers (405 miles).
- Sea caves (or littoral caves) are situated on the coast, formed by the tidal action and continual wave that weakens or erodes sea cliffs.
- Scientific or recreational exploration of a cave system is known as spelunking, potholing or caving.
- The most popular types of cave formation are the solutional caves. They’re developed by natural acids in the groundwater dissolving soluble rock like limestone (or sometimes dolomite, chalk, gypsum or marble).
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