- A mountain rock ice alpine climbing school and guide service, THE COLORADO MOUNTAIN SCHOOL CMS is in Estes Park, COLORADO, home of Rocky Mountain National Park, ROCKY MOUNTAIN NATIONAL PARK, RMNP. Colorado Mountain School CMS is the only legally permitted guide service in Rocky Mountain National Park RMNP. ROCK rock ICE ice ALPINE alpine MIXED mixed MOUNTAIN mountain CLIMBING climbing ...www.sternelkind.com