This caldera from a super volcano was formed only 3500 years ago. Aniakchak Caldera formed during an enormous explosive eruption that expelled more than 50 km3 (11.5 cubic miles) of magma. The caldera is 10 km (6.5 miles) in diameter and 500-1,000 m (1/2 mile) deep. Subsequent eruptions formed domes, cinder cones, and explosion pits on the caldera floor.
Take a Tour of The Caldera at The Mauna Loa Volcano ~ See it as Only Google Earth can Show it ~
Double Click Mauna Loa Caldera ~ Then Hit The Play Button to Take a Tour that Only Google Earth Can Give ~ Make sure that the Terrain Layer is Engaged ~ Enjoy