Nearly symmetrical cinder cone in the San Francisco Volcanic Field north of Flagstaff, with a dark basaltic lava flow extending south. Unlike the closed summit trails at nearby Sunset Crater Volcano NM, SP Crater is a classic scramble to the rim (~700 ft gain) via rough dirt roads—textbook cinder-cone morphology for desert geology fans.
Field facts
| Region | Coconino County, AZ |
|---|---|
| Coordinates | 35.5822, -111.6318 |
| Access | Unpaved roads west of US-89 north of Flagstaff; high-clearance recommended; hike from saddle west of cone |
| Agency | Mix of Coconino National Forest / State Trust / private checkerboard—verify current access |
| Feature | Cinder cone ~7000+ ft summit; SP-shaped crater rim; young lava flow |
| Nearby | Sunset Crater Volcano NM, Wupatki NM, San Francisco Peaks |
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