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A '''caldera''' is a large, circular depression that is formed by the collapse of the [[volcano|volcanic]] cone after a large eruption. Caldera differ from [[crater|craters]] in that they are larger, and craters are caused rock removal during an eruption.
== References ==
[http://volcanoes.usgs.gov/Products/Pglossary/caldera.html USGS Photo Glossary of Volcanic Terms]
[http://pubs.usgs.gov/gip/volcus/ustext.html USGS - Volcanoes of the United States]