Located 30 miles northwest of Cheyenne, this was a familiar landmark in early American history, once marking the international boundary line between the United States and Mexico.
Location
From Cheyenne, go N on Hwy 283 about 20 miles, then W on Hwy 33 for 8 miles, then N at the Antelope Hills sign.
OpenStreetMap Google Maps
35.902142, -99.882126
35.902142, -99.882126
Photos

Notes
Cheyenne Chamber of Commerce: www.cheyenneokchamber.com