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#REDIRECT [[Crater Lake (disambiguation)]]
''This page describes the geological feature. For the lake of the same name, see [[Crater Lake]].''

[[Image:Crater Lake from rim-USGS.jpg|thumb|275px|Crater Lake in Oregon: view from the rim.]]

A '''crater lake''' is a lake that forms in [[volcano|volcanic]] [[caldera]]s or [[Volcanic crater|crater]]s after the volcano has been inactive for some time. The best-known crater lake, which bears the same name as the geological feature, is [[Crater Lake]] in [[Oregon]] state's [[Mount Mazama]]. Some crater lakes are acidic, however, some lakes' water remains fresh. Some also have geothermal activity, especially if the volcano is merely dormant rather than extinct.

Lakes can also fill [[impact crater|crater]]s formed by [[impact event]]s. An example is the [[Bosumtwi crater]] in Ghana, Africa.
== Visual ==
* [http://www.virtuar.com/click/2005/crater_lake/ Crater Lake Virtual Tour] by [http://www.virtuar.com/click.htm San Fancisco Click]

== See also ==
* [[Maar]]
*[[list of crater lakes]]
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Latest revision as of 01:53, 17 October 2022