English Hannegan caldera Cited by user Citation bot on 11 Dec 2022 Hannegan caldera is a 3.72 million year old volcanic collapse structure in the North Cascades of the U.S.
English Kulshan Caldera Cited by user Magmatist on 09 Dec 2022 The Kulshan Caldera is a Pleistocene volcano in the North Cascades of Washington and one of the few calderas identified in the entire Cascade Range.