Michael has a BA in History & American Studies and an MSc in American History from the University of Edinburgh. He comes from a proud military family and has spent most of his career as an educator in the Middle East and Asia. His passion is travel, and he seizes any opportunity to share his experiences in the most immersive way possible, whether at sea or on the land.

Part of our in-depth series exploring Sioux Nation Forts

Bureau of Land Management
P.O. Box 36800
Billings, MT 59107
Phone: 406-875-2233
or 406-896-5235
Email: [email protected]

Pompeys Pillar is a rock outcropping that rises 200 feet above the Yellowstone River 30 miles east of Billings. Pompeys Pillar is like a sandstone history book that reads like a who’s who of western frontier history. Look on the rockface for the remains of animal drawings created by people who used the area for rendezvous, campsites, and hunting. In 1806 Captain William Clark carved his signature and the date in this rock. It is the only site on the trail where visible evidence of the Lewis and Clark Expedition may be viewed by the public. Interpretive tours.


$7.00 per vehicle starting Memorial Day weekend and ending at the end of October. Vehicles with 7-25 passengers pay $12 and 26+ is $20.


Take Exit 23 off Interstate 94, approximately 30 miles east of Billings. Follow signs 0.5 mile to site.

Season of Operation

Late May through Late October

Hours of Operation

8:00 a.m. - 4:00 p.m. The monument closes for the winter and reopens in May. Visitors can however still access the site during daylight hours.

Services and Amenities

Handicapped Accessible
Public Restroom
Registered Historic Site
Gift Shop
Lewis and Clark


Wildlife Viewing
Lewis and Clark

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