Unusual U-shaped cinder cone in the San Francisco Volcanic Field (~740,000 years old) with a large natural amphitheater, hoodoos, and dark mineral crystals. Easy USFS Trail 159 (about 3 miles RT) leads from a signed US-180 trailhead into the eroded cone interior.
Field facts
| Region | Coconino County, AZ |
|---|---|
| Coordinates | 35.5366, -111.8565 |
| Age | ~740,000 years (USGS) |
| Trail | Red Mountain Trail No. 159 |
| Elevation gain | ~275 ft |
| Access | Paved US-180 + short dirt spur |
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Public recreation data — BLM & Recreation.gov (RIDB). Verify current access, fees, and seasonal closures before traveling.
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