You may have picked up this guide for the famous Fins, but that fine area is just the tip of the potato. Locals and a few savvy visitors have long known about the truly "underground" areas covered here: Boise&';s Black Cliffs, Teddy Bear Cove, Dierkes Lake, Leslie Gulch, the crazy Lava Tubes, and more. Dave Bingham, Godfather of Idaho climbing put out this revised edition.