U.S.A., Wyoming, Natrona, Upper North Platte and Laramie River Drainages: Sentinel Rocks: West Beef Acre Spring, ca 4.4 air mi E of Wyo Hwy 220; ca 4.2 air mi SW of Independence Rock.
42.4383 -107.1602
42.4383° N, 107.1602° W; T29N R86W S32 SW1/4; also T28N R86W S6
1890-1921 meters
6200-6300 ft.
Granite rocks with Rocky Mountain juniper and scattered limber pine.