Kofa National Wildlife Refuge covers roughly 665,000 acres of Sonoran Desert mountains and valleys northeast of Yuma. It was established primarily for desert bighorn sheep; Palm Canyon’s native fan palms are a popular short hike. Free entry; high-clearance roads, no water, and extreme summer heat. Watch for open mines in old claim country.
Field facts
| Region | Yuma County, AZ |
|---|---|
| Coordinates | 33.2498, -114.2172 |
| Species | Bighorn sheep |
| Access | High-clearance dirt; King Valley entrance off US-95 |
| Crowds | Very low |
| Terrain | Rugged desert |
| Fee | Free |
| Best season | Winter (mild temps) |
| Agency | U.S. Fish & Wildlife Service |
| Warning | Historic mine openings—do not enter shafts or adits |
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