Caldera

Okmok Caldera, in the Aleutian Islands

A caldera is a large, circular depression that is formed by the collapse of the volcanic cone after a large eruption. Caldera differ from craters in that they are larger, and craters are caused by rock removal during an eruption.

## Examples of Caldera in the United States[edit]

Crater Lake \- Oregon

Valles Caldera \- Jemez Mountains, New Mexico

Yellowstone Caldera \- Yellowstone National Park, Wyoming

## References[edit]

USGS Photo Glossary of Volcanic Terms

USGS - Volcanoes of the United States