Sun Valley Mine
Vermilion Cliffs Nat'l Monument
The Sun Valley Uranium mine was discovered in 1966. Portions of the head-frame and other mine structures and debris are still in place including an old truck frame. The mine shaft is still open and registers a low level of radiation in various locations throughout the site. All structures related to the mining operation are fragile. For your safety do not dig in or explore the mine shaft.
Near Mile Post 550 on Highway 89A, west of Navajo Bridge there is a “people gate” on the north side of the road that will lead you to an old road heading back into the cliff face. There are two small information signs located at the gate. Follow the old road, which has been reclaimed in many areas up to the mine. The mine is located approximately 1 1/4 miles from the “people gate”.
Visitor Activities
Viewing historic sites and hiking.
Special Features
The mine is located in the Paria Canyon-Vermilion Cliffs Wilderness Area. Future interpretive panels are planned for this location.
Permits, Fees, Limitations
There are no permits or fees. Wilderness is closed to motor vehicles, mechanical transport, and motorized equipment.
No adaptations.
Safety Concerns
Hiking in foothills may be hazardous because of loose rock, steep slopes, and extreme summer temperatures. Fall, winter, and spring are the best times to visit. Parts of the trail are steep.
Although signed, there is an open mine shaft, fragile mining equipment and structures. Do not play, enter or explore the mining structures. Low levels (not hazardous to human health) of radiation have been recorded in the yellow mine tailings. Do not sit on or eat near the yellow mine tailings. Do not camp within ¼ mile of Sun Valley Mine.
Biting deer flies can be bad in the late spring/early summer. Wear long pants to avoid bites. No water is available in this area. Heat-related injuries and dehydration could be potential problems. Hikers must carry adequate amounts of water.
Camping and Lodging
Dispersed camping is available within Vermilion Cliffs National Monument and House Rock Valley on Arizona Strip Field Office Lands at least ¼ mile from water sources or developed recreation sites. The closest campgrounds are Stateline Campground on BLM Road 1065, Lee’s Ferry, AZ and the Kaibab National Forest. Lodging is available in Marble Canyon and Page, AZ and Kanab, UT.
Food and Supplies
The nearest source of food and supplies is Kanab, UT, and Marble Canyon and Page, AZ.
First Aid
First aid is not available within the national monument. The nearest year-round first aid is at Lee’s Ferry (National Park Service), approximately 14 miles east of Sun Valley Mine, AZ. The nearest hospital is in Page, AZ, 55 miles away.
Additional Information
All artifacts, mineral deposits and historical items must be left in place. You may not collect any artifacts, ancient or historical, on public lands without a permit. This includes arrow heads or flakes, pottery or potsherds, mats, rock art, old bottles or pieces of equipment and buildings. These items are part of our national heritage and scientists are still learning much from them. Recreational collecting of Monument resources, such as rocks, mineral specimens, petrified wood, fossils, or plants is prohibited.

 Vermilion Cliffs National Monument 
Monument Manager:  Wayne Monger, Acting
345 E. Riverside Drive
St. George, UT 84790-6714
(435) 688-3200 
Hours: 7:45 a.m.-5:00 p.m. Monday through Friday 
10:00 a.m.-3:00 p.m. Saturday 
Closed Sunday