Mount Massive was first surveyed and climbed in 1873 during the Hayden Survey of the American West. Survey member Henry Gannett is credited with the first ascent.^[6] Its name comes from its elongated shape: it has five summits, all above 14,000 ft (4,300 m), and a summit ridge over 3 mi (4.8 km) long, resulting in more area above 14,000 ft (4,300 m) than any other mountain in the 48 contiguous states, narrowly edging Mount Rainier in that category. Mount Elbert (14,440 ft (4,400 m)) is Mount Massive's nearest neighbor among the fourteeners; it lies about 5 mi (8.0 km) south-southeast of the peak.^[7]

A matter of some contention after the Great Depression arose over the heights of Massive and its neighbor, Mount Elbert, which have a height difference of only 12 feet (3.7 m). This led to an ongoing dispute which came to a head with the Mount Massive supporters taking it upon themselves to build large piles of stones on the summit to boost its height, only to have the Mount Elbert proponents demolish them.^[8][9][10]

A class 2 hiking path leads to the peak from the eastern face. The path is 13.6 mi (21.9 km) round trip, with a 4,500 ft (1,400 m) elevation gain.^[6]

There are several glacial lakes in the wilderness area. The lower slopes of the mountain are covered in lodgepole pine forests, which gradually yield to Engelmann Spruce and Fir. Treeline is just below 12,000 feet. Among the mountain's fauna are the American pika, the mountain goat, elk, mule deer, moose, Canada jay, martin, and the yellow-bellied marmot.

In the Arapaho Language the Collegiate Range and Mount Massive are called Hiwoxuu hookuhu'ee or Elk's Head.^[5]

• List of mountain peaks of North America
  • List of mountain peaks of the United States
    • List of mountain peaks of Colorado
      • List of Colorado fourteeners

• "Mount Massive". 14ers.com.