U.S.A., Montana, Carbon, Pryor Mountains: Custer National Forest: along Commissary Creek from near the head of the canyon S ca 1.5 mi and back along Island Ridge, ca 26-26.5 air mi SE of Bridger.
45.1453 -108.4133 +-1609m.
45.1633° N, 108.422° W to 45.1453° N, 108.4133° W; uncertainty 1 mi., GPS reading; T8S R27E S9 E1/2