An underground adventure awaits you! Enter the crystal-filled caves at Mercer Caverns to see a beautiful subterranean wonderland. On this spelunking trek, view amazing calcite formations, rootsicles and stalactites. Then take a swim in an underground cave at Natural Bridges State Park. The adventure continues when you rappel 16 stories down in a cave at Moaning Caverns and crawl through tunnels on a guided spelunking tour. Back on the surface, you and your camp friends will enjoy all the fun Sugar Pine has to offer. Note: Campers must be at least 12 years old, at least 4 feet tall and weigh a minimum of 100 lbs.