 | Winds and pressures aloft pushed clouds into a hockey stick configuration on a cold day in January near the site where the Lewis and Clark Expedition met with Yankton Sioux to smoke the peace pipe in August of 1804. The meeting site is now inundated with the waters of Lewis and Clark lake, but on the left (to the southwest), the Calumet Bluffs are still visible in the shadow of that cloud bank. In the right center of the image, Lewis and Clark lake recedes into the distance for 25 miles over the western horizon.
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