VHP Photo Glossary: More Calderas
Photograph by D.W. Peterson
Mauna Loa Volcano, Hawai`i.
Snow-covered Moku`aweoweo Caldera atop Mauna Loa shield volcano (Mauna Kea in background). The caldera is 3 x 5 km across, 183 m deep, and is estimated to have collapsed between 600-750 years ago. Several pit craters along the upper southwest rift zone of Mauna Loa (lower right) also formed by collapse of the ground. For more information about the world's largest volcano, see Mauna Loa Volcano from the USGS Hawaiian Volcano Observatory.Photograph by C. Neal on June 4, 1990
Kaguyak volcano, Alaska.
This lake-filled caldera formed atop a former stratovolcano (note remnant of upper part of older cone at right center). The caldera formed about 1,100 years ago and is 2.5 km in diameter. The prominent peninsula and small island consists of lava domes erupted after the caldera formed.Photograph by B. Yount on April 11, 1984
Ugashik volcano, Alaska.
Aerial view, looking southwest, of Ugashik caldera. The caldera is 5 km in diameter and is partially filled by at least five lava domes erupted after the caldera formed.Photograph by D. Wieprecht on August 20, 1995