330,000-acre Sonoran Desert national monument on the Mexican border protecting the northernmost wild stands of organ pipe and senita cactus among classic saguaro forests. UNESCO biosphere reserve with scenic drives (Ajo Mountain, Puerto Blanco), desert hiking, and the Kris Eggle Visitor Center on AZ-85.
Field facts
| Region | Pima County, AZ |
|---|---|
| Coordinates | 31.9548, -112.8011 |
| Access | Paved AZ-85 through monument; dirt scenic loops may need high clearance |
| Agency | National Park Service |
| Designations | National Monument (1937); UNESCO Biosphere Reserve |
| Icon | Organ pipe cactus (Stenocereus thurberi) |
Nearby locations
Nearby amenities
- CampgroundTWIN PEAKS CAMPGROUND1.7 km away
- Rec areaOrgan Pipe Cactus National Monument10.5 km away
- CampgroundAlamo Canyon Primitive Campground14.8 km away
Public recreation data — BLM & Recreation.gov (RIDB). Verify current access, fees, and seasonal closures before traveling.
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