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3720 Walnut St
Boulder, CO, 80301
United States


Rocky Mountain Rescue Group, Inc. (RMRG) is an all-volunteer organization trained and equipped for search and rescue on mountainous terrain in all weather conditions. Founded in 1947, we are Boulder County's primary mountain rescue agency, but upon request also assist other mountain rescue teams outside the county. We also provide outdoor recreation safety education and disaster response services. RMRG is a non-profit IRS 501(c)3 organization and we do not charge for our services.

Rescuing Pinned Climber

Rocky Mountain Rescue Group rescued a climber who was pinned by a 2-ton boulder while climbing Flagstaff Mountain in Boulder, Colorado.

Extricating an injured climber, Flagstaff Mountain, Boulder Mountain Parks


3 May-2012: Rescuers rigging to lift a large boulder to free a trapped, injured climber.

At 1:34 p.m. Boulder County Sheriff dispatch toned agencies for an emergency response to reports of calls for help near Realization Point on Flagstaff Mountain. RMRG, AMR Ambulance, City of Boulder Open Space and Mountain Parks, Boulder City Fire Department, and the Boulder County Sheriff's Office responded to the scene. Bystanders at the trail head pointed in the general direction of the cries, and responders quickly located a stuck and injured climber, pinned underneath a large boulder, a short distance north of Flagstaff Road.

The patient had been bouldering with a companion on a 10-12' tall boulder and unexpectedly pulled off a large piece of it. The climber fell backwards to the ground, and came to rest in a sitting position, pinned against a tree, and one leg pinned between the detached piece of the boulder and another rock (photo). The climber sustained injuries but was able to breathe normally and could not extract himself.

Upon arrival, rescuers quickly began formulating plans to move the boulder and free the injured climber. A combination of an RMRG steel cable (lower photo) tensioned with a hand powered rope haul system and the Boulder Fire Department's gasoline powered portable hydraulic ram lifted the rock (photo left, wrapped with green, purple and blue webbing) off of the patient's leg. Additional rescuers and wood cribbing were also used to ensure the boulder did not shift and cause further injury to the patient or rescuers as it was lifted. The multi-agency crew completed extrication at 2:47 p.m. RMRG then performed a short scree evacuation to carry the patient to an awaiting ambulance for transport to Boulder Community Hospital. 20 RMRG volunteers responded to this incident. The injured climber is expected to make a full recovery.

Climbing safety discussion

Approximately 4% of climbing accidents RMRG responds to are caused by rock fall. Most of these accidents occur February through June. Seasonal risk increase is presumably associated with seasonal precipitation, freeze thaw cycles and climbing use patterns. The first climbers of the season are more likely to pull off loosened rock than the last climbers of the season. The injured climber remarked that had he inspected of the top of the boulder problem prior to attempting to climb it, he likely would have noticed the loose rock hazard and avoided it. This accident occurred in a relatively low climbing use area. Any individual climber in a low use climbing area is more likely to encounter loose rock than an individual climber in a more popular area. In more popular climbing areas other climbers are likely to have already released loose rock. Climbers are well advised to be particularly alert to potential rock fall hazards February through June. Added caution is appropriate on less travelled rock formations or routes.


Photos Copyright John Keller, 2012. All Rights Reserved.

Photos Copyright John Keller, 2012. All Rights Reserved.