You can hike, backpack, camp, rock climb, picnic, bird, study nature, geocache and stargaze. (You cannot swim here or ride bikes on the trails.) Hiking Explore nearly 11 miles of hiking trails. Take a virtual tour with our Interactive Trails Map. All trails close 30 minutes after sunset, except the Loop Trail. The Summit Trail may close in wet weather. Rock Climbing Rock climbers must check in at park headquarters. You can pick up route maps there and read the climbing rules. Read through our Climbing Information before you come.