Isa Lake, Yellowstone National Park

Isa Lake is located in Yellowstone National Park, in the U.S. state of Wyoming. The lake straddles the continental divide at Craig Pass. Indigenous peoples have lived in the Yellowstone region for at least 11,000 years. In the 1800s, at the time of the first European exploration of the area, the region was home to several Indigenous Nations including the Nimíipuu, Absaroke, and Shoshone Nations. Hiram M. Chittenden became the first known European to sight the lake in 1891, while searching for the best routes connecting Old Faithful and the West Thumb Geyser Basin. Chittenden named the lake after Miss Isabel Jelke, from Cincinnati, though it is not clear why. ()