Friends Office: 406-969-5380       Monument: 406.875.2400
1523 14th St. West, Ste. 2
Billings, MT 59102

Mailing Address:
P.O. Box 23535
Billings, MT 59104

Welcome to Friends of Pompeys Pillar

The Visitor Center and Boardwalk is now open to the public as of May 1st, 2021. We look forward to your visit!

Note: The Boardwalk stabilization project is not yet complete and may require temporary closure while additional stabilization work is being done. Please check back here for updates.

The Governor of Montana has issued specific directives for out of state travelers entering the state. The directive specifics can be found by clicking here.

If you have any questions about the state directive, please contact the Governor’s office.

When recreating on public land, please follow CDC guidance to slow the spread of infectious diseases: maintain social distancing, cover your mouth and nose when you cough or sneeze, and stay home if you feel sick.

For more information and CDC guidelines, click here.


Buses bring school children to visit Pompeys Pillar National Monument thanks to transportation funds provided by Pompeys Pillar Historical Association


Your donation goes directly toward providing transportation so school children may visit Pompeys Pillar National Monument every year. 

Please click on the green “DONATE” button at the top of this page.


Opening day for the 2021 Season: May 1, 2021 

We invite you to take a journey through our website to explore and learn more about the history of Pompeys Pillar National Monument.

We are a 501 (c) (3) non-profit organization established in 1989 to support Pompeys Pillar National Monument, which contains the last remaining inscription of the Lewis and Clark Expedition of 1803-1806. Our mission is to preserve and protect the Monument by educating visitors through interpretation, special projects, and by supporting the Bureau of Land Management (BLM) in its management of the site. The effort of the Pompeys Pillar Historical Association was a driving force to get this site into the public lands domain, which resulted in the purchase of the historical land from the Foote family by the BLM in 1991. By working cooperatively with the BLM in the planning and administration of the site, the Pompeys Pillar Historical Association successfully accomplishes this mission.

We look forward to your visit!

Events – 2021

Please visit our Facebook page for more detail on upcoming events!

Sept 26th – Rock the Run 2021 • 5K Fun Run/Walk • Race Starts At 8:30AM

July 25th – Signature Day • Free admission 

June 1st – National Trails Day • Free Admission 

February 11th – Baby Pomp Birthday Celebration Fundraiser



 Walk-ins after hours are always welcome. Approximately a one mile walk from gate to Pillar.

May – September
   Front Gates: 8:00am – 5:30pm
   Interpretive Center: 9:00am – 6:00pm
   Gift Store: 9:00am – 5:30pm

October (Weather Dependent)

    Front Gates: 8:00am – 4:00pm
    Interpretive Center: 9:00am – 4:00pm
    Outbound Gate: Closes at 4:30pm

RV parking spots are available.


3039 Highway 312 Pompeys Pillar, MT
46° N -108° W
(406) 875-2400

The Pillar overlooks the Yellowstone River about 25 miles east of Billings, Montana. The area is easily accessible from I-94, using exit 23.


Only during operational months and hours.

$25 Commercial 1-6 people
$40 Commercial Van 7-24 people
$100 Commercial Bus 25+ people
$20 Pompeys Pillar Membership Pass


Pompeys Pillar National Monument accepts and sells the following Interagency passes:
    Senior (Golden Age)
    Volunteer (not available for sale)