Hike into Valles Caldera today, and you’d never guess that this sunken oval of ponderosa forests and trout streams 40 miles northwest of Santa Fe was the epicenter of a cataclysmic explosion. But 1.25 ...

The city of Mammoth Lakes sits on the edge of the Long Valley Caldera formed around 700,000 years ago. This caldera is 15 miles in diameter and is North America's second largest. 1. The Long Valley ...

Explore an unparalleled geological and recreational gem in the high elevations of northern New Mexico’s Jemez Mountains. The park showcases one of the world’s best examples of a resurgent caldera—a ...

Caldera systems, formed by the collapse of a volcanic edifice following major magma extraction, represent some of the most dynamic and hazardous volcanic environments on Earth. Activity within these ...