Aniakchak Caldera

Aniakchak Caldera...

Detailed Description

Aniakchak Caldera formed during an enormous explosive eruption that expelled more than 50 km3 of magma about 3,450 years ago. The caldera is 10 km in diameter and 500-1,000 m deep. Subsequent eruptions formed domes, cinder cones, and explosion pits on the caldera floor.


Image Dimensions: 800 x 500


National Park Service