U.S.A., Wyoming, Carbon, Hanna Basin: Halleck Ridge from Rattlesnake Pass NE ca 2 air mi, ca 10-12 air mi S of Hanna; ca 8.5-9 air mi W of the town of Elk Mountain.
41.72 -106.5605 NAD 83
41.72° N, 106.5605° W; NAD 83, , GPS reading; T20N R82W S12; also S14