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The Boulder Mountains are home to the headwaters of the Salmon River, which Lewis and Clark traveled in their boats.

Boulder-White Cloud Mountains
Photo: Boulder-White Cloud Mountains, courtesy Craig Gehrke.

find another placeWilliam ClarkAugust 23, 1805. Clark: The River from the place I left my party to this Creek is almost one continued rapid, five verry considerable rapids     the passage of either with Canoes is entirely impossible, as the water is Confined between huge Rocks & the Current beeting from one against another for Some distance below &c. &c.     at one of those rapids the mountains close so Clost as to prevent a possibility of a portage with [out] great labour in cutting down the Side of the hill removeing large rocks &c. &c.     all the other may be passed by takeing every thing over slipery rocks, and the Smaller ones Passed by letting down the Canoes empty with Cords, as running them would certainly be productive of the loss of Some Canoes, those dificulties and necessary precautions would delay us an emence time in which provisions would be necessary.

More about the people of the Boulder Mountains

August 19, 1805. Lewis: from the middle of May to the first of September these people [Shoshones] reside on the waters of the Columbia where they consider themselves in perfect security from their enimies as they have not yet ever found their way to this retreat; during this season the salmon furnish the principal part of their subsistence and as this fish either perishes or returns about the 1st of September they are compelled at this season in surch of subsistence to resort to the Missouri, in the vallies of which, there is more game even [than] within the mountains. here they move slowly down the river in order to collect and join other bands either of their own nation or the Flatheads, and having become sufficiently strong as they conceive venture on the Eastern side of the Rockey mountains into the plains, where the buffaloe abound. but they never leave the interior of the mountains while they can obtain a scanty subsistence, and always return as soon as they have acquired a good stock of dryed meat in the plains; when this stock is consumed they venture again into the plains; thus alternately obtaining their food at the risk of their lives and retiring to the mountains, while they consume it. These people are now on the eve of their departure for the Missouri, and inform us that they expect to be joined at or about the three forks by several bands of their own nation, and a band of the Flatheads.

September 4, 1805. Clark: prosued our Course down the Creek to the forks for about 5 miles where we met a part[y] of Tushepau [Flathead] nation, of 33 Lodges     about 80 men 400 Total and at least 500 horses, those people rec[e]ved us friendly, threw white robes over our Sholders & Smoked in the pipes of peace,     we Encamped with them & found them friendly,     The Chief harangued untill late at night, Smoked in our pipe and appeared Satisfied. I was the first white man who ever wer on the waters of this river.

Find out more:

  • Sierra Club in Idaho
  • Rivers of Lewis and Clark
  • Lewis and Clark in Idaho
  • Kettle Range Conservation Group
  • Sierra Magazine: Lewis and Clark