Karst topography is a geological formation shaped by the dissolution of layers of soluble rock such as limestone. Mature karst landscapes, where more bedrock has been removed than remains, may result in karst towers, or haystack/eggbox landscapes. Beneath the surface, complex underground drainage systems (such as karst aquifers) and extensive caves and cavern systems may form. A good example is found in Guangxi Province in southeast China. The image was acquired December 3, 2013, covers an area of 28 by 31.5 km, and is located at 24 degrees north, 107.9 degrees east.
Image credit: NASA/GSFC/METI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team
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