Buckhorn Wash is located at the northwestern corner of the giant San Rafael Swell of southern Utah. From Salt Lake City, this is one of the closer areas to get into Red Rock Country. The San Rafael River runs through the region and gives it enough tree cover to make this an ideal camping spot in the harsh desert climate. A beautiful rock art pictograph panel is located nearby, as well as the Wedge, or the Little Grand Canyon, and Lower Black Box. The Wedge overlook is a beautiful site to behold, and the Lower Black Box is a canyoneering gem that you can access from here. Some of the bonuses about this place are that it is free, dogs are allowed, and you can camp for two weeks before having to move because it is BLM land. Make sure you pack out everything you brought in, and don't expect to have any facilities or cell reception while you are in the area.
If you are coming in from Highway 10, make sure to check out the Rochester Rock Art Panel on the way; it is much larger then the nearby Buckhorn Wash Pictograph Panel.