(Al Hartmann | The Salt Lake Tribune) Young hiker jumps rocks in a side canyon of the Dirty Devil River Canyon. (Al Hartmann | The Salt Lake Tribune) Cliffs reflected in the Dirty Devil River. (Al Hartmann | The Salt Lake Tribune) Factory Butte on the southern end of the San Rafael Reef as seen near Hanksville is on the Southern Utah Wilderness Alliance list of Utah's ten most threatened wilderness treasures. The group alleges a BLM land-use plan could turn some of this area into a motorized play ground. (Al Hartmann | The Salt Lake Tribune) Factory Butte on the southern end of the San Rafael Reef as seen near Hanksville is on the Southern Utah Wilderness Alliance list of Utah's ten most threatened wilderness treasures. The group alleges a BLM land-use plan could turn some of this area into a motorized play ground. (Al Hartmann | The Salt Lake Tribune) Dirty Devil River Canyon. (Al Hartmann | The Salt Lake Tribune) Hikers make their way across slickrock to the Dirty Devil River.