MARTIN BOND / SCIENCE PHOTO LIBRARY MARTIN BOND / SCIENCE PHOTO LIBRARY
Limestone pavement. Hikers sitting on a limestone pavement which forms a plateau above a cliff. Limestone pavements are flat exposures of bare limestone which consist of irregular blocks separated by clefts. The joints within the limestone have been enlarged by chemical weathering to form this pattern of clints (ridges) and grykes (clefts). Limestone pavements are typical of Karst scenery, a type of limestone topography produced by percolating ground waters and underground streams and named after the Karst region of former Yugoslavia. Photographed at Malham Cove in North Yorkshire, Great Britain.
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