Just got back from a 2800-mile road trip through Colorado, Utah, Idaho, and Montana. Some of it covered the Lewis and Clark Trail. An adventure for the ages, for sure. I've read reams of stuff about the Corps of Discovery and what happened after. I traveled through the ancestral homelands of the Ute, some pre-historic lands, the Nez Perce, the Shoshoni, and the Kootenai, the Blackfeet, the Arapaho, and the Salish. Their loss is indescribable. Those people are still there and still starving. If you want reading recommendations just let me know.
No wonder they held onto these lands unto death and starvation. The Colorado, Green, White, Madison, Bitterroot, the Salmon, Snake Platte, and Madison Rivers are as spectacular as ever, maybe. Travel the West, it's big.