6 votes

Pompeys Pillar National Monument

3001 Highway 312, Worden, Montana 59088 USA

Open Now
Sat 9a-6p
  • Independent
  • Credit Cards
  • Wheelchair
  • Public

“famous sandstone butte”

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. Captain Clark named the Pillar "Pompeys Tower" in honor of Sacagawea's son Jean Baptiste Charbonneau, whom he had nicknamed "Pomp." Nicholas Biddle, first editor of Lewis and Clark's journals, changed the name to "Pompeys Pillar."

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Reviewed by

  • 2 Reviews
  • 5 Helpful
June 02, 2014

Really nice tour guide, not far to walk, and nice little interactive place for the kids

2 people found this review helpful

Reviewed by

  • 1 Review
  • 0 Helpful
December 03, 2016
Rated 5.0

A beautiful and historical spot. A unique geological feature with thousands of years of history. Famous for one signature, but important for so much more.

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Reviewed by

  • 9 Reviews
  • 1 Helpful
August 09, 2015
Rated 5.0

Very cool!

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Reviewed by

  • 10 Reviews
  • 3 Helpful
August 06, 2015

Really nice facility! We arrived just before closing but got helpful pointers from the ranger and interpretative staff that still let us see the Clark name carving in the rock and read the signs in the 30 minutes we had before we had to get out.
Very close to the highway and worth the time to stop

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Reviewed by
Tim Scott

  • 6 Reviews
  • 0 Helpful
August 01, 2015
Rated 4.0

Beautiful, well designed infrastructure (museum, gift shop, pathways, stairs, lookout, and toilets), but crabby staff. Actually, it seems everyone in Montana is ill tempered. A great view into the only material proof (in the field) that Lewis and Clark were where they said. Graffiti!

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Pompeys Pillar National Monument

3001 Highway 312
Worden, Montana
59088 USA


Open now until 6:00 pm
  • Sun - Sat: 9:00 am - 6:00 pm

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  • Independent
  • Credit Cards Accepted
  • Wheelchair Accessible
  • Public Restrooms

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