Rattlesnake Cliff, 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"He followed the Indian road till he reached a high perpendicular cliff of rocks where the river makes its passage through the hills, and which he called the Rattlesnake cliff, from the number of that animal which he saw there."