The Diamond is the sheer and prominent east face of Longs Peak and named for the shape of the cliff. The face has a vertical gain of more than 900 feet (270 m) all above an elevation of 13,000 feet (4,000 m). It is a world-famous Alpine climb.[1]
^Green, Stewart M. (1995). Rock Climbing Colorado. Helena, Montana: Chockstone/Falcon Press. ISBN1-56044-334-0.