Astronomers have identified the largest and most distant water reservoir ever detected in the universe. This immense collection of water, equivalent to 140 trillion times the water in Earth's ...

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. A thrilling view of a gorge ...