San Antonio Mountain, Volcanic summit in Rio Arriba County, New Mexico, US.
San Antonio Mountain stands as a free-standing volcanic peak, reaching an elevation of 10,908 feet within the Taos Plateau volcanic field of New Mexico.
The mountain formed between 3.36 and 2.9 million years ago through dacite dome construction, producing lava flows up to 30 meters thick across the region.
The Tewa-speaking peoples of the Rio Grande valley refer to this landform as Bear Mountain, designating it as the mountain of the north in their traditional beliefs.
Forest Road 418 leads to the summit, though access requires navigating around a private property gate and continuing on foot through Carson National Forest.
The mountain maintains a five-mile base diameter and rises distinctly from sagebrush plains, making it visible from 60 miles away in Colorado and New Mexico.
Location: New Mexico
GPS coordinates: 36.85974,-106.01891
Latest update: March 17, 2025 20:09
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