Colorado: Hagerman Peak, Snowmass Peak District. During the last week of August 1949, Robert Hostetter became marooned overnight on Hagerman Peak. He later told a search party that, after progressing ahead of his companions, he decided to climb the peak, and that darkness eventually stopped him while he descended the mountain. Although he was not injured, he suffered somewhat from exposure
Source of information: newspaper reports.
Analysis. This is evidently the familiar story of a person who separated himself from his party by going ahead too eagerly