Valles Caldera is a large volcanic caldera located in northern New Mexico, USA. Formed by a massive volcanic eruption around 1.15 million years ago, it spans approximately 12 miles in diameter. The area is characterized by lush meadows, forests, and hot springs, making it a unique ecological zone. Today, Valles Caldera is part of the Valles Caldera National Preserve, which was established to protect its natural beauty and geological features. The preserve offers various recreational activities, including hiking, fishing, and wildlife viewing, attracting visitors interested in exploring its diverse landscapes and rich history.