Mount Massive Mount Massive Mount Massive is the second-highest summit of the Rocky Mountains of North America and the U.S. state of Colorado. The prominent fourteener of the Sawatch Range is located in the Mount Massive Wilderness of San Isabel National Forest, west-southwest (bearing 247°) of the City of Leadville in Lake County, Colorado, United States. Mount Massive edges out the third-highest summit of the Rockies, Mount Harvard, by , but falls short of Mount Elbert by . It ranks as the third-highest peak in the contiguous United States after Mount Whitney and Mount Elbert. Mount Massive was first surveyed and climbed
Fitzsimmons Range Summit and Flute Summit, which are hillocks along the ridge running southeast from Whistler Mountain and were named in association with the renaming of Whistler. Beyond them is Singing Pass and Mount Fitzsimmons 2603 m (8540 ft) which is at the opposite end of the range from Whistler Mountain and the location of Fitzsimmons Glacier, which is the source of Fitzsimmons Creek. Mount Fitzsimmons is part of the Overlord Massif, which is named for the highest peak in the range, Overlord Mountain, 2625 m (8612 ft), just to its west. The massif forms a pyramidal massif visible from Whistler Village;