Pompeys Pillar National Monument is a rock formation located in south central Montana, United States. Designated a National Monument on January 17, 2001, and managed by the U.S. Bureau of Land Management, it consists of only, making it one of the smallest National Monuments in the U.S. It was previously designated a National Historic Landmark on July 25, 1965. The new 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.The pillar itself stands 150 feet (45 m) above the Yellowstone River and consists of sandstone from the late Cretaceous Hell Creek Formation, 75 – 66 million years ago. The base of the pillar is approximately 1acre.The pillar features an abundance of Native American petroglyphs, as well as the signature of William Clark, co-leader of the Lewis and Clark Expedition. Clark's inscription is the only remaining physical evidence found along the route that was followed by the expedition.Using our custom trip planner, Pompeys Pillar attractions like Pompeys Pillar National Monument can form part of a personalized travel itinerary.
Create an itinerary including Pompeys Pillar National Monument
Unable to display map at this time. Please try again later.
PRLyonAugust 11, 2017
This stone monolith was a fixture of my childhood, but though it was only 3 miles away from my homestead, I visited only twice in my youth- it was family owned and offered little to no visitor accomod... more »
dpw_12RTJuly 26, 2017
Took a break from our drive on I-94 and were not disappointed. This is a very nice historical landmark of the Lewis & Clark expedition...climb to the top of the pillar offers a great view of the surro... more »
rlucky34July 24, 2017
My family and I went to this monument. It was a nice stop and of significant historical value. My family and I enjoyed looking at this monument. more »
Melinda GrossJune 28, 2017
A wonderful little stop. Low admission but supports National Parks. Beautiful interpretive center that's immaculately clean and has great multimedia exhibits and a small give shop. Soda vending machines. It's about 220 steps up to the top, but the view is worth it. Also lots of pathways to hike along the river-perfect for letting kids burn off some energy. And a great staff of volunteers to tell you about the history of the place!
Koleen LittleJune 23, 2017
I had been wanting to go to the Pillar since reading "Undaunted Courage" years ago and FINALLY made it. Not a disappointment. Only drawback was a lady on top trying to convince us that Custer was NOT at fault for his defeat, very disturbing to us who wanted peace and quiet reflection for what LEWIS and Clark and the Corp of Discovery did. She should have been down below not on top. We ended up going back down before we really wanted to go. All in all I was glad to have taken this monument. Thanks for keeping this open for us.
Toby BarattaMay 28, 2017
Very pretty and a good stop. Clean bathrooms and it's always great to support national monuments!
Benjamin NugentJune 1, 2017
Historical graffiti lol but seriously if your following the Louis&Clark training. Check this out and the facility is great for picnik's
Peg SmithJuly 9, 2017
Exciting place to see where William Clark signed his name.
Plan your trip to Pompeys Pillar
Get a personalized planA complete day-by-day itinerary
based on your preferences
Customize itRefine your plan. We'll find the
best routes and schedules
Book itChoose from the best hotels
and activities. Up to 50% off
Manage itEverything in one place.
Everyone on the same page.
Side trips from Pompeys Pillar
Where to stay in Pompeys Pillar
Browse hotels, guesthouses, and unique homes and book your stay on the world's leading accommodation sites.
Plans in Pompeys Pillar by other users
1 day in Pompeys Pillar BY A USER FROM UNITED STATES October, popular PREFERENCES: October ATTRACTION STYLE: Popular PACE: Medium 1 day in Pompeys Pillar BY A USER FROM UNITED STATES August, popular PREFERENCES: August ATTRACTION STYLE: Popular PACE: Medium 21 days in United States BY A USER FROM UNITED STATES August, popular PREFERENCES: August ATTRACTION STYLE: Popular PACE: Medium
Are you the owner of this business?Click here for promotion tips.