Skip to content

Shield Volcano Caldera

Shield volcano calderas are formed over time, as layers of the volcano are built up. Shield volcano calderas are usually less than 3.1 miles across.

The islands of Hawaii have a number of impressive shield volcano calderas. Moku’aweoweo, the caldera at the summit of Mauna Loa on the “Big Island” of Hawaii, is really three distinct depressions that overlap. This caldera complex has an area of about 6 square miles and can be up to 600 feet deep.

The Galápagos Islands are also a series of shield volcanoes with some summit calderas. Fernandina Island is the most volcanically active island in the chain and has a deep caldera at its summit.