On Tuesday, rangers and local rescue personnel responded to a report of an injured rock climber in the park. Michael Mullen, 30, of San Diego, California, was climbing with companions on the Outer Mongolia rock formation when he lost his footing while on belay and fell an estimated 50 feet, sustaining a head injury and cuts and abrasions. Mullen received emergency treatment for his injuries and was flown by helicopter to Loma Linda for further medical treatment. Approximately 20 search and rescue personnel were involved in the incident. Ranger Jimmy Pritchett was IC.