Yellowstone\'s Super Sisters - A look at other calderas Interesting read from Quayle's site taken from the discovery.com. LAKE TOBA, SUMATRA, INDONESIA LONG VALLEY, CALIFORNIA LAKE TAUPO, NEW ZEALAND VALLES CALDERA, NEW MEXICO AIRA, JAPAN SIBERIAN TRAPS This is just a sampling of what is currently out there being studied, but there are also calderas that no one knows much about. For example: Ethiopia's 460-square-mile Awasa caldera and the 1,000-square-mile Pastos Grandes caldera of Bolivia. The Bolivian caldera rivals Toba if you can believe it. B.