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[[Image:OkmokCaldera.jpg|300px|thumb|Okmok Caldera, in the Aluetian Islands]]
[[Image:OkmokCaldera.jpg|300px|thumb|Okmok Caldera, in the Aluetian Islands]]
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.
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.
== Examples of Caldera in the United States ==
[[Crater Lake]] - [[Oregon]]
[[Valles Caldera]] - [[Jemez Mountains]], [[New Mexico]]
[[Yellowstone Caldera]] - [[Yellowstone National Park]], [[Wyoming]]