Reef Bay Trail
This is one of the most interesting hikes on St. John, but the 2.2-mile return climb, rising 900 feet from sea level back to the trailhead, is a real workout. Along the way, one short side trail to the west takes you to a small pool where indigenous inhabitants carved petroglyphs into the rock. Another short side trail to the east leads to the plantation's great house, a gutted but mostly intact structure with vestiges of its former beauty. Down at sea level, walk around the sugar factory ruins or cool off at the beach before hiking back up. The Friends of the Virgin Islands National Park ( 340/779–4940 www.friendsvinp.org) offers a ranger-guided hike with a boat ride back to Cruz Bay for $75.