Kofa National Wildlife Refuge
Kofa Queen Canyon Rd, Yuma, AZ
Yuma, AZ
A wild sweep of sawtooth mountains and open desert set aside for the desert bighorn sheep, hiding a secret grove of native palms deep in a rocky canyon.
Kofa National Wildlife Refuge protects a vast, empty sweep of the Sonoran Desert in southwestern Arizona, dominated by the sawtooth ridgeline of the Kofa Mountains and the neighboring Castle Dome range. It was set aside in the 1930s chiefly to protect the desert bighorn sheep, and it remains some of the wildest, least-developed country in the state, crossed only by rough dirt roads and washes.
The refuge takes its odd name from an old gold mine, the King of Arizona, whose ore boxes were stamped K of A, shortened over time to Kofa. Hidden within its rugged folds is a small wonder that draws most visitors: Palm Canyon, a narrow rocky cleft holding a grove of California fan palms, the only palms native to Arizona, growing where they have no business being.
What Guests Love
- Desert bighorn sheep on the cliffs of the Kofa and Castle Dome mountains
- Palm Canyon, a hidden grove of Arizona's only native palms tucked in a rocky cleft
- Vast, quiet, roadless desert with almost no development
- Dark, star-filled skies far from any city lights
Worth Knowing
- This is remote backcountry; carry plenty of water, fuel, food, and a spare tire, and tell someone your plans
- Most access roads are dirt and rough, and a high-clearance vehicle is strongly recommended
- There is no visitor center, water, or services inside the refuge, so come fully self-sufficient
- Summer heat here is extreme and dangerous; cooler months are far safer for exploring
Details
Yuma, AZ
Learn about Kofa National Wildlife Refuge
A refuge for the bighorn
By the 1930s the desert bighorn sheep of the Southwest had been hunted and pushed to the edge, and a public campaign, backed by the Boy Scouts among others, pressed the government to protect them. Kofa was established in 1939 as a game range to give the bighorn a stronghold, and it has served that purpose ever since, its cliffs and hidden water sources sustaining one of the more important herds in Arizona.
The bighorn are perfectly built for this country, climbing sheer rock with ease and going long stretches on little water. Spotting one takes patience and a good pair of binoculars, scanning the high ledges of the Kofa and Castle Dome mountains where they graze and rest. The refuge also shelters mule deer, coyotes, kit foxes, desert tortoises, and a scattering of raptors and desert birds.
Palm Canyon and the native palms
The most visited spot in the refuge is Palm Canyon, reached by a short, rocky trail that climbs into a cleft in the Kofa Mountains. Look up into a side canyon and you will see a cluster of tall California fan palms crowded into a shaded, protected crack in the rock. These are the only palms native to Arizona, survivors from a wetter age, hanging on where the canyon walls shield them from sun and freeze.
The best light falls on the grove in the afternoon, when the sun angles into the canyon and lights the fronds against the dark rock. The palms are a botanical curiosity and a reminder of how the Southwest has changed over long stretches of time, a green surprise in a land of stone and thorn.
Ghosts of the gold rush
The refuge is named for the King of Arizona mine, a rich gold strike worked at the turn of the twentieth century, and the surrounding desert is dotted with the remains of that boom. Old workings, tailings, and the ruins of camps mark places where prospectors chased ore across these harsh mountains, and the neighboring Castle Dome district was another busy mining area in its day.
Those days are long gone, and nature has largely reclaimed the ground, but the mining history is part of what shaped the map here, from the roads to the names. Old mine shafts can be dangerous, so the safe course is to admire the history from a distance and leave any workings alone.
Season and solitude
Kofa is a place for the cooler half of the year. From late fall through early spring the days are mild and the desert can bloom after winter rains, with wildflowers softening the harsh ground and the mountains standing crisp against clear skies. This is the time to hike Palm Canyon, drive the back roads, and camp under some of the darkest skies in Arizona.
Summer is another matter. The heat here is severe and can turn deadly fast, water is nonexistent, and help is far away, so summer travel is only for the very well prepared. In any season the appeal is the same: solitude, silence, and a piece of the Sonoran Desert left almost exactly as it has always been.
Closest Boutels
The closest Boutel™ stays, so you can turn this stop into an overnight. Each is an independently owned, editorially selected place to stay.
Things to Do Near Yuma
Quartzsite
About 20 miles north
A small desert town famous for its winter influx of snowbirds, rock hounds, and vast open-air markets and gem shows.
Castle Dome Mines Museum
About 40 miles southwest
A restored ghost town and mining museum with dozens of period buildings telling the story of the old Castle Dome silver district.
Yuma
About 60 miles south
A historic Colorado River crossing and farm town, home to the old Yuma Territorial Prison and a warm-winter desert base.
Colorado River
About 40 miles west
The great river forming the Arizona-California line, lined with lakes and refuges and long a lifeline across the desert.