T he McDermitt Caldera, an ancient supervolcano straddling the Nevada-Oregon border, may hold the world’s largest lithium deposit ever discovered. With estimates ranging between 20 and 40 ...

Researchers believe rainfall and flooding changed the landscape of the arid desert to a green area some 8,000 years ago.

This caldera is 15 miles in diameter and is North America's second largest. 1. The Long Valley Caldera in which the city of Mammoth Lakes sits was thought until recently to be the largest Caldera ...

Travel through one of the largest calderas in the world at Mt. Aso in Kumamoto Pref. The caldera has fertile ground to sustain crops and livestock.