Old Hyndman Peak is an 11,775-foot mountain in Idaho’s Pioneer Mountains and the range’s eighth-highest summit, ranking 27th in the state. Its summit sits on the border of Sawtooth and Salmon-Challis National Forests and also marks the line between Blaine and Custer counties. Located near Hyndman Peak and Cobb Peak, it is part of a tightly clustered group of prominent high summits in central Idaho.