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Crossing the Continental Divide: A Complete Guide to the Lewis and Clark Rocky Mountains Route in 2026

"The Rocky Mountain segment of the Lewis and Clark Expedition remains one of the most grueling, geophysically challenging, and historically significant phases of the 1804–1806 Corps of Discovery mission. When Meriwether Lewis and William Clark set out from St. Louis, they operated under Thomas Jefferson’s geographic assumption that a simple, gentle portage of perhaps a half-day's walk separated the headwaters of the Missouri River from the Columbia River basin. Instead, they collided with the formidable, snow-capped wall of the Bitterroot Range, testing the limits of human endurance and altering the course of American cartography. For modern t..."

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