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Near Worden in Yellowstone County, Montana — The American West (Mountains)
 

Pompey's Pillar

 
 
Pompey's Pillar Marker image. Click for full size.
Photographed by Duane Hall, August 2, 2010
1. Pompey's Pillar Marker
Inscription. Called Iishiia Anaache or "Place Where the Mountain Lion Dwells" by the Apsaalooka (Crow) people, Pompey's Pillar was a well-known landmark to the Plains Indians. It was here, at a strategic natural crossing of the Yellowstone, or Elk River as it was known to the Apsaalooka, that the Indian people met to trade and exchange information. They painted pictographs and etched petroglyphs onto the sheer cliffs of the feature. Apsaalooka legend reports that Pompey's Pillar was once attached to the sandstone bluffs on the north side of the river. At one point, however, the rock detached itself from the cliffs and rolled across the river to its present site.

Pompey's Pillar was also a significant landmark for Euro-American explorers, fur trappers, soldiers and immigrants. It was discovered by Canadian North West Company employee Francois Larocque in 1805. A little less than a year later, on July 25, 1806, it was visited by a 12 man detachment under the command of William Clark that included Sacajawea and her infant son. Clark carved his name and the date on the rock and named it in honor of Sacajawea's son. He was just one of
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hundreds of individuals who for generations have left their marks on the rock.
 
Topics and series. This historical marker is listed in these topic lists: ExplorationIndigenous Peoples and Communities. In addition, it is included in the Lewis & Clark Expedition, and the National Historic Landmarks series lists. A significant historical month for this entry is July 1870.
 
Location. 45° 59.231′ N, 108° 0.298′ W. Marker is near Worden, Montana, in Yellowstone County. It is on Old Highway 312 0.3 miles east of Bundy Rd, on the left when traveling east. Marker is located near entrance road to Pompey's Pillar National Monument. Touch for map. Marker is in this post office area: Worden MT 59088, United States of America. Touch for directions.

Regionally, this marker is in Yellowstone Country and in Greater Billings. It is also in the American Mountain West and in the Lewis & Clark Corridor. Globally, it is in North America, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once Rupert’s Land and also the Louisiana Purchase.

Other nearby markers. At least 8 other markers are
Pompey's Pillar viewed from the marker image. Click for full size.
Photographed by Duane Hall, August 2, 2010
2. Pompey's Pillar viewed from the marker
within walking distance of this marker: Camp #44 of the 1873 Yellowstone Expedition (here, next to this marker); The Huntley Irrigation Project: Harnessing the Water of the Yellowstone River (approx. 0.3 miles away); Coal: Black Wave of the Future (approx. half a mile away); Open Spaces: Room to Roam (approx. half a mile away); The "Yellowstone River" Walkway (approx. half a mile away); Buffalo: Then and Now (approx. half a mile away); A Good Home (approx. half a mile away); Triumph and Torment (approx. half a mile away). Touch for a list and map of all markers in Worden.
 
Another marker is no longer nearby. Pompey’s Pillar (was about 300 feet away, measured in a direct line but has been permanently removed).
 
Mark of William Clark on Pompey's Pillar image. Click for full size.
Photographed by Duane Hall, August 2, 2010
3. Mark of William Clark on Pompey's Pillar
 
 
Credits. This page was last revised on May 5, 2020. It was originally submitted on December 26, 2012, by Duane Hall of Abilene, Texas. This page has been viewed 1,216 times since then and 31 times this year. Photos:   1, 2, 3. submitted on December 26, 2012, by Duane Hall of Abilene, Texas. • Bill Pfingsten was the editor who published this page.
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Aug. 1, 2026