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Red Mountain a volcanic cinder cone that rises 1,000 feet above the surrounding landscape. It is unusual in having the shape of a "U", open to the west, and in lacking the symmetrical shape of most cinder cones. In addition, a large natural amphitheater cuts into the cone's northeast flank. Erosional pillars called "hoodoos" decorate the amphitheater, and many dark mineral crystals erode out of its walls. Studies by U.S. Geological Survey (USGS) and Northern Arizona University scientists suggest that Red Mountain formed in eruptions about 740,000 years ago.
- Red Mountain Azul Overlook.jpg
- Lars Romig
- Image Size
- 3600x4800 / 14.8MB
- Contained in galleries
- Dog on the Edge, Outside Arizona