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 …

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Editor’s Note: In September 2013, University of Montana geography faculty member Rick Graetz and Kayde Kaiser, a geography graduate student, launched the “This Is Montana” program as an outreach effort that is delivered to an estimated 80-plus high schools and newspapers. Articles penned by …