Near Tendoy in Lemhi County, Idaho — The American West (Mountains)
"Immence Ranges of High Mountains Still to the West of Us..."
- Meriwether Lewis, August 12, 1805
The maps of North America carried by Lewis and Clark showed only a vast, uncharted space between the Mandan villages of the Missouri Rier and the Pacific Coast. The mountains separating the Missouri and Columbia river drainages were drawn as a single ridge. There was hope of finding a simple land route, or portage, over the Rocky Mountains. Map makers two hundred years ago did not know what the West was like.
The modern map above is just a small slice of the United States along the Lewis and Clark Trail. Imagine trying to find you way across this land without such a map. Lewis and Clark, and many others who follow after them, have filled in the blanks for us.
Erected by Beaverhead-Deerlodge & Salmon-Chaillis National Forest.
Topics and series. This historical marker is listed in these topic lists: Exploration • Natural Features. In addition, it is included in the Lewis & Clark Expedition series list.
Location. 44° 58.876′ N, 113° 26.771′ Touch for map. Marker is in this post office area: Tendoy ID 83468, United States of America. Touch for directions.
Other nearby markers. At least 8 other markers are within walking distance of this marker. A Communication Across the Continent by Water (a few steps from this marker); Agency Creek (approx. 0.2 miles away); Lemhi Pass (approx. 0.2 miles away); From Route ... To Road (approx. 0.4 miles away); Crossing the Great Divide (approx. 0.4 miles away); "Most Distant Fountain" of the Mighty Missouri (approx. ¾ mile away in Montana); The Beginning of the "Endless Missouri" (approx. ¾ mile away in Montana); Sacajawea Memorial Area (approx. ¾ mile away). Touch for a list and map of all markers in Tendoy.
More about this marker. This marker is located on the Continental Divide Trail.
This marker is on the Lewis and Clark National Back Country Byway and Adventure Road. The Byway is a 36 mile loop from Tendoy, Idaho to Lemhi Pass and back to Tendoy over gravel roads with a 4000 foot gain and loss in elevation. There are 10 designated stops with pullouts on the Byway and over two dozen information panels and markers on route. Estimated travel time is about 3 hours.
1. Spelling of Immance on the marker
The spelling of Immence is taken verbatim from the marker, presumably verbatim from Meriwether Lewis' account of the trip.
— Submitted June 30, 2020, by Devry Becker Jones of Washington, District of Columbia.
Credits. This page was last revised on June 30, 2020. It was originally submitted on November 2, 2017, by Barry Swackhamer of Brentwood, California. This page has been viewed 176 times since then and 38 times this year. Photos: 1, 2, 3. submitted on November 2, 2017, by Barry Swackhamer of Brentwood, California.