U.S.A., South Dakota, Harding, Custer National Forest: Slim Buttes: near terminus of eastern-most fork of North End or Forest Road 3124 in and around Mitchell Draw near Lena Spring Number 2, ca 3.5 air mi N of Reva Gap, ca 17.5 air mi E of Buffalo.
45.5894 -103.1872 NAD 83
45.5894° N, 103.1872° W; NAD 83, , GPS reading; T19N R8E S30