Colorado Mountain School (CMS) offers courses and privately guided group and individual outings in rock climbing, mountaineering, skiing, snowshoeing, ski mountaineering, avalanche training and ice climbing throughout Colorado. CMS is the exclusive climbing concessionaire for Rocky Mountain National Park and based locally in Boulder and Estes Park. CMS is the largest guide service in Colorado and has more American Mountain Guides Association certified Guides than any other guide service in the state. Our lodge located in Estes Park, Colorado, is for CMS clients only.