Looking back down the Rock Creek trail from the first switchback, as it climbs above tree line in

alt="Looking back down the Rock Creek trail from the first switchback, as it climbs above tree line in the classic, U-shaped, glacially-sculpted canyon. About 11.2 miles into the run and at an elevation of 11,550'." border="0">

Looking back down the Rock Creek trail from the first switchback, as it climbs above tree line in the classic, U-shaped, glacially-sculpted canyon. About 11.2 miles into the run and at an elevation of 11,550'.

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