Colorado—Rocky Mountain National Park: (3) On August 7, 1952 Charles Mahan (20), slipped on a steep snowfield on Ypsilon Mountain while on a Y. M. C. A. Conference hike. He slid into a rock pile, fractured his left collar bone, and lacerated his left knee. The aid of a number of rangers was enlisted in order to facilitate his removal from the scene of the accident. Conditions forced the party to wait until the next day to remove him by stretcher.
Source: Report Rocky Mountain National Park.
N. B.: An almost identical accident happened on the same peak last year. It is not known whether it was the same snowfield or not.