Twin Peaks – Abruptly uplifted mountains

On an April 2010 climb, MCA’s Brent Voorhees is near the 4,236-foot summit of POW/MIA peak in the Chugach Mountains. Peaks from left: Pioneer Peak north summit (6398); Pioneer Peak south summit (6349); East Twin Peak (5873); and Goat Rock, 5282. West Twin Peak (5472) is hidden behind Goat Rock. These mountains are all part of a geologic complex that lies within a west to east running fault called the Border Range Fault.