About Pompeys Pillar National Monument and Visitor Center
Pompeys Pillar National Monument is a remarkable testament to human history, showcasing hundreds of markings, petroglyphs, and inscriptions that create a living journal of the American West. For over 11,000 years, many peoples celebrated this sandstone outcrop as a landmark and outstanding observation point, with explorer William Clark of the Lewis and Clark Expedition leaving his mark alongside countless others.Visit the Monument and climb the boardwalk to the top of the pillar, learn about the Lewis and Clark expedition and more at the Visitor Center, and enjoy the picturesque riverside grounds and trails.Hours and SeasonsFor the 2026 season, we will open on 01 May 2026 and close on 01 October 2026 (so, our last day of operation for the 2026 season will be 30 September 2026).The Monument is closed every Tuesday for maintenance. Monument gates open each day at 8:00am, and close at 4:00pm. The Monument and the adjoining Area of Critical Environmental Concern are open during daylight hours only. When the vehicle gates are closed, including on Tuesdays for maintenance, visitors are welcome to park outside the gates and walk-in (during daylight hours only).
How to Get There
The Monument is 25 miles east of Billings, Montana. It can be easily accessed from exit 23 of Interstate 94, or from State Highway 312.
Driving directions (Google Maps) →Plan Your Visit to Pompeys Pillar National Monument and Visitor Center
Heading to Pompeys Pillar National Monument and Visitor Center? A few things to know before you go:
- Reservations: popular sites fill up fast — check Recreation.gov 6 months in advance
- Fees: day-use and camping fees vary; check current rates on the official park page
- Trash & pack-out: follow Leave No Trace principles
- Wildlife: store food in bear boxes where provided; never feed wildlife
- Weather: the 5-day forecast above is updated every 6 hours; verify just before you go
Frequently Asked Questions
Do I need a reservation for Pompeys Pillar National Monument and Visitor Center?
No central reservation system listed for Pompeys Pillar National Monument and Visitor Center. Check the official page (https://www.recreation.gov/recarea/3116) for the latest entry policy and availability.
How do I get to Pompeys Pillar National Monument and Visitor Center?
The Monument is 25 miles east of Billings, Montana. It can be easily accessed from exit 23 of Interstate 94, or from State Highway 312.
How do I contact Pompeys Pillar National Monument and Visitor Center?
You can reach the park at phone: 406-896-5013 or email: BLM_MT_Billings_FO@blm.gov.
References & Official Resources
