The longest known cave in Alaska, more than two miles of mapped passage in the limestone of Prince of Wales Island in the southeast panhandle. Its cold entrance has yielded Ice Age bones, black bear, and remains that helped rewrite the story of how people first came down this coast. Entry is by free ranger-guided tour ONLY: Wednesday to Sunday from Memorial Day to 9 August, tours at 9am, noon and 2:30pm, booked at least two days ahead with the Thorne Bay Ranger District on (907) 828-3304. Groups are capped at six, nobody under seven, and you climb 370 steps just to reach the mouth. They hand you a helmet and headlamp; it holds at 40F inside, so dress for it. PUBLIC (Tongass National Forest), by reservation.
This is remote ground. The closest other places on the map are a long way off.
