Tongass National Forest

This is the largest surveyed cave in Alaska with 12,000 feet of surveyed passageway. The guided tour follows the first 600 feet of the 1600 foot main passage. A map of the cave is available in several sizes.

The trek into the first part of the cave is the hardest part of the journey. You climb over immense boulders that were carried long distances by grinding glaciers and then deposited in the mouth of the cave. The ceilings are low; "Watch your head!" is frequently heard over the exertions of your group.

As the tour descends past the boulders, you are asked to turn off your light. In the semi-darkness, you can see light filtering into the cave through the small holes that lead to the surface. This area of the cave, just past the entrance, is referred to as the twilight zone.