Valles Caldera National Preserve

San Antonio Cabin often housed cowboys when the preserve was privately-owned and operating as a ranch.
About 1.2 million years ago, a spectacular volcanic eruption created a 14-mile-wide circular depression in the earth now known as 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.
Map showing location of park.
A fre crew member walks near burning piles on a snow-covered mountain slope.
Valles Caldera Winter Prescribed Burns Beginning
The National Park Service is set to begin winter pile burning operations within the San Antonio Mountain project area of Valles Caldera National Preserve beginning on or shortly after December 2nd, 2025. If conditions are not favorable to begin burning in San Antonio, the team will switch to burning piles on either South Mountain or Cerro Piñon. The area around the burn activities will be closed to public access until operations are completed.
Scattered clouds over landscape view of winding river and brown grasslands
Photo by NPS Photo
A coyote walks across a frozen stream in a snowy valley.
Photo by NPS/Corey Lycopolus
San Antonio cabin under a mostly cloudy sky
Photo by NPS Photo
Two bull elk fighting.
Photo by NPS Photo / Dan Williams
A narrow stream meanders through a montane grassland.
Photo by NPS/Irene Owsley