The core group of stellar bouldering sites in the Columbia River Gorge. GB provides boulderers with a specific selection of the best of the best bouldering sites in the Columbia Gorge. This book captures the essence of these favorite local bouldering sites in full color, and is loaded with value, detail and plenty of photos to get you quickly to your next bouldering goal. Bouldering sites: Larch Mtn Boulders, Alpenglow Boulders, Hamilton Boulders, Horsethief Butte, and Empire Boulders.