Mount Doody is a peak in Glacier National Park’s Lewis Range, on the same ridgeline as the Cloudcroft Peaks and rising to between 8,644 and 8,684 feet. It was named for Dan Doody, one of the park’s first six rangers, who patrolled the Middle Fork drainages from his homestead and later served as a park hunter. The mountain is part of Glacier’s broader geologic story, formed from sedimentary rock laid down from the Precambrian through the Jurassic in ancient shallow seas and later uplifted when the Lewis Overthrust pushed older rock over younger Cretaceous layers about 170 million years ago. Its alpine subarctic climate brings severe winters and short summers.