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Hawaii Volcanoes National Park

By John Fischer, About.com

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Park Ranger Walk to the Rim of Kilauea Caldera

Park Ranger Guided Tour to the Kilauea Caldera Overlook - Hawaii Volcanoes National Park

Park Ranger Guided Tour to the Kilauea Caldera Overlook - Hawaii Volcanoes National Park

Photos by John Fischer
One such ranger walk will take you across Crater Rim Drive through a tropical rainforest to the very edge of Kilauea Caldera within which is the pit crater of Halemaʻumaʻu.

From beneath this caldera lava begins is flow towards the ocean.

Useful Terms*

  • Caldera: The Spanish word for cauldron, a basin-shaped volcanic depression; by definition, at least a mile in diameter. Such large depressions are typically formed by the subsidence of volcanoes. Crater Lake occupies the best-known caldera in the Cascades.

  • Crater: A steep-sided, usually circular depression formed by either explosion or collapse at a volcanic vent.

  • Pit Crater: A crater formed by sinking in of the surface, not primarily a vent for lava.
*Source: Volcano World

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