National Park Service, New Mexico.
About 1.25 million years ago, a spectacular volcanic eruption created the 13-mile wide circular depression now known as the Valles Caldera. The preserve is known for its huge mountain meadows, abundant wildlife, and meandering streams. The area also preserves the homeland of ancestral native peoples and embraces a rich ranching history.
From Jemez Springs, NM: Follow NM-4 north. The Preserve is about 22 miles from Jemez Springs. Look for the Main Gate and signs at Mile Marker 39.2. From Los Alamos, NM: Take Trinity Drive to Diamond. Take a left on Diamond, then a right on West Jemez Road to the intersection with NM-4. Take a right [away from Bandelier National Monument], following the highway up and into the Jemez Mountains. The Preserve is 18 miles up NM-4 from Los Alamos. Look for the Main Gate and signs at Mile Marker 39.2.