Pompeys Pillar National Monument

Quick Facts

Pompeys Pillar National Monument

Montana

(406) 875-2400

Map Directions

Things To Do

   

Overview

Pompeys Pillar is one of the most famous sandstone buttes in America. It bears the only remaining physical evidence of the Lewis and Clark Expedition, which appears on the trail today as it did 200 years ago. On the face of the 150-foot butte, Captain William Clark carved his name on July 25, 1806, during his return to the United States through the beautiful Yellowstone Valley. A boardwalk leads to Capt. Clark's signature and to the top of the pillar. Trails lead visitors past a replica of Captain Clark's canoes and to a view of the 670 mile-long Yellowstone River. Pompeys Pillar National Monument is open from April 30th through October 15th. The landmark is open to walk-in visitation during the off-season. BLM staff and Pompeys Pillar Historical Association volunteers provide visitor services during the operating season. The Pompeys Pillar Historical Association, in conjunction with the Bureau of Land Management, hosts "Clark Days" the last weekend of July each year. River floaters, reenacting Captain Clark's canoe voyage, arrive at the Pillar during the afternoon. A buffalo barbeque, entertainment, living history demonstrations and interpretive activities are scheduled for the event, which will be the last Saturday and Sunday in July.

Map of Pompeys Pillar

Latitude, Longitude: 45.996723, -108.008995

READ MORE

Activities

  • Historic Sites

    There are numerous resources for visitors to learn about the historic significance of Pompeys Pillar. A boardwalk leads to Capt. Clark's signature and to the top of the pillar. There are several walking trails throughout the monument and adjacent public lands. There are also interpretive walks along the sidewalk and boardwalk that go from the parking lot to the top of the Pillar.

    The Pompeys Pillar Interpretive Center opened in 2006. Exhibits in the 5,700-square foot center relate the journey of Captain William Clark and his detachment, including Sacagawea and her son Pomp, down the Yellowstone River Valley in 1806.

  • Wildlife Watching

    Pompeys Pillar is located at a natural ford in the Yellowstone River--the longest free-flowing river in the Lower 48. A large and diverse wildlife population is drawn to the site's thriving riparian zone, creating fantastic wildlife viewing. Common species include whitetail deer, fox and bobcat. More than 160 bird species can be seen here, including some on the BLM's sensitive species list such as the ferruginous hawk and peregrine falcon.

Seasonality/Weather

Pompeys Pillar National Monument is open from April 30th through October 15th. The landmark is open to walk-in visitation during the off-season. BLM staff and Pompeys Pillar Historical Association volunteers provide visitor services during the operating season.

Park Partners

Pompeys Pillar Historic Association

The Pompeys Pillar Historical Association (PPHA) assists the Bureau of Land Management in its endeavors to develop the Lewis and Clark National Monument. All income from memberships, donations and sales for the PPHA is designated for use at the site.

(406) 967-3281

Directions

Driving

The area is easily accessible from Interstate 94, using exit 23, or from State Highway 312. The Pillar is a sandstone butte or mesa covering about 2 acres at its base and standing about 150 feet high.

Flying

The closest major airport is Billings Logan International Airport, which is approximately 40 minutes away.

Phone Numbers

Primary

(406) 875-2400

Links