Pompey's Pillar, Montana, United States (Google Maps ⧉, OpenStreetMap ⧉)
Referenced In
History of the Expedition Under the Command of Captains Lewis and Clark: To the Sources of the Missouri, Thence Across the Rocky Mountains and Down the River Columbia to the Pacific Ocean
by Meriwether Lewis, William Clark"Late in the evening, a very black cloud accompanied with thunder and lightning arose, and captain Clarke landed to examine a very remarkable rock situated in an extensive bottom on the right, to which he gave the name of Pompey’s pillar."
History of the Expedition Under the Command of Captains Lewis and Clark: To the Sources of the Missouri, Thence Across the Rocky Mountains and Down the River Columbia to the Pacific Ocean
by Meriwether Lewis, William Clark"“...having reached the Yellowstone near Pompey’s pillar, they determined to descend the river…”"