Expert technical rock climbers like the tall sandstone cliffs in Zion Canyon, although rangers warn that much of the rock is loose, or "rotten," and climbing equipment and techniques that are suitable for granite are often less effective (and therefore less safe) on sandstone. Backcountry permits, available at visitor centers, are required for overnight climbs and cost $10 for one or two persons, $15 for three to seven, and $20 for 8 to 12 people. Because some routes may be closed at times, such as during peregrine falcon nesting from early spring through July, climbers should check at the Zion Canyon Visitor Center before setting out. Zion Adventure Company and Zion Rock & Mountain Guides offer a variety of guided rock climbing and hiking trips, as well as instruction, near the park. Zion Rock & Mountain Guides also offers equipment rentals and sales.
Climbers without the necessary expertise for Zion are advised to try nearby Snow Canyon State Park.
