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Limestone pavement at Gambier, SA, Australia. (Image : Ken Grimes) |
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When some caves fill with water, pools can form at the surface. These are called Rise Pools. This one is in Indiana, USA. (Image : Chuck Perkins) |
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During wet weather, some caves spill their overflow on the surface forming springs, like this one in Indiana, USA. (Image : Chuck Perkins) |
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This streambed in Indiana, USA is only active when the caves below and surrounding water table cannot accept more water. (Image : Chuck Perkins) |
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A large sinkhole in Tennessee, USA. (Image : Chuck Perkins) |
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Jointing in limestone has caused this unusual drainage pattern in karst at Bungonia, NSW, Australia. (Image : Gary Lewis) |
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Shallow flooded dolines in karst area in Gambier, SA, Australia. (Image : Ken Grimes) |
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A cenote - a collapsed doline that has penetrated the water table to form a lake. Little Blue Lake, Mt Gambier, SA, Australia. (Image : Ken Grimes) |
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A spring bubbles up out of karst on a beach in South Australia. (Image : Ken Grimes) |
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Rilling (Spitzkaren) on a limestone tower at Chillagoe, Queensland, Australia. (Image : Ken Grimes) |
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Karst tower at Chillagoe, Queensland, Australia. (Image : Ken Grimes) |
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Limestone towers from tha air at Chillagoe, Queensland, Australia. (Image : Ken Grimes) |
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Steep cliffs in the karst topography in Mexico. (Image : Carleton Bern) |
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Karst landscape in Custer County, Colorado. (Image : Carleton Bern) |
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