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Geography fun facts and oddities: Difference between revisions
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=== Sinkholes === | === Sinkholes === | ||
[[File:Thor's Well (37588682016).jpg|250px|border|right|thumb|Thor's Well: a sinkhole on the coast of Cape Perpetua, Oregon]] | [[File:Thor's Well (37588682016).jpg|250px|border|right|thumb|Thor's Well: a sinkhole on the coast of Cape Perpetua, Oregon]] | ||
[[File: | [[File:December Giant sinkhole collapse USGS 1972.jpg|right|250px|thumb|More than three acres of forest suddenly disappeared into the "Golly Hole" or "December Giant" sinkhole in Montevallo, Alabama, USA. (wiki)]] | ||
* sinkholes are holes or caves in the ground caused by erosion or a collapse of a lower, below-ground surface, usually because of water drainage | * sinkholes are holes or caves in the ground caused by erosion or a collapse of a lower, below-ground surface, usually because of water drainage | ||
* sinkholes may also be caused by a drainage of water, such as a water table decline | * sinkholes may also be caused by a drainage of water, such as a water table decline | ||