Long Valley Caldera

Long Valley Caldera is a large volcanic crater located in eastern California, formed about 760,000 years ago when a massive eruption caused the ground to collapse. It measures roughly 10 miles across and contains Mono Lake and the town of Mammoth Lakes. The caldera is still geologically active, with occasional volcanic unrest and geothermal activity such as hot springs. It is carefully monitored for signs of potential eruptions, though none are imminent. The area is known for its stunning landscapes, including rugged mountains, volcanic domes, and diverse wildlife, making it an important site for scientific study and outdoor recreation.