This is Montana: Montana's Greatest Wonder: The Missouri River (Part 4 of 5)

On June 16, 1805, Captain Clark of the Corps of Discovery – with an extremely ill Sacajawea accompanying him – halted below the confluence of Belt Creek and the Missouri River ("portage creek," to the Corps), setting up what would become the base camp for their month-long assault around the "great falls." As part of Meriwether Lewis's effort to cure the young mother, he used the water of a...