Clark at Pompeys Pillar
Traveling down the Yellowstone River, Clark stopped at a large sandstone pillar and carved his name and the date into it. He named the formation Pompy's Tower in honor of Sacagawea's young son, Jean Baptiste Charbonneau. Clark recorded the rock as roughly 200 feet high and 400 paces around, noting the wide views from its top. The carving, reading 'Wm Clark July 25 1806,' still survives at what is now Pompeys Pillar National Monument and is the only remaining physical trace of the expedition along its route.
While descending the Yellowstone River, Clark carved his name and the date into a sandstone pillar he named “Pompy’s Tower” after Jean Baptiste Charbonneau, Sacagawea’s toddler son.
“This rock I shall call Pompy’s Tower, after the young Shoshone boy. I marked my name and the day of the month & year.”
Clark’s inscription — “Wm Clark July 25 1806” — remains visible today and is the only physical evidence of the expedition still in its original location along the trail. The site is now Pompeys Pillar National Monument, managed by the Bureau of Land Management.
Clark described the pillar as 200 feet high and 400 paces in circumference, with “a most extensive view in every direction” from its summit.
Read this entry in modern English AI-translated
While descending the Yellowstone River, Clark carved his name and the date into a sandstone pillar he named "Pompy's Tower" after Jean Baptiste Charbonneau, Sacagawea's toddler son.
"This rock I shall call Pompy's Tower, after the young Shoshone boy. I marked my name and the day of the month & year."
Clark's inscription — "Wm Clark July 25 1806" — remains visible today and is the only physical evidence of the expedition still in its original location along the trail. The site is now Pompeys Pillar National Monument, managed by the Bureau of Land Management.
Clark described the pillar as 200 feet high and 400 paces in circumference, with "a most extensive view in every direction" from its summit.
This modernization is AI-generated for accessibility. The original above is the authoritative version.
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