Nature
Heart Mountain, an 8,123-foot peak north of Cody, Wyoming, is a striking landmark in the Bighorn Basin and one of the most remarkable geological features in the Rocky Mountain region. Its name reflects both Crow tradition and early exploration, with English versions recorded by William Clark and George Drouillard. Geologically, it is a klippe left from an immense rock sheet that slid from near the present eastern Absaroka Range between about 50 and 48 million years ago. Older limestone and dolomite now rest atop much younger rocks after the largest known land rockslide, likely tied to Absaroka volcanism, while erosion later left Heart Mountain as a dramatic remnant.
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Ralston, Wyoming · United States
