Cathedral Rock, Amphitheater, Cholla Loop Fitness Hike at Brown’s Ranch This Difficult hike will take us to several of the iconic granite formations in the preserve.  7 miles in about 3.5-4 hours. Experienced hikers suggested. Bathrooms available at the trailhead. Bring water, snacks and even a lunch for the trail. No dogs please.  Arrive 15 minutes before start of hike.