Mount Fitzgerald is the fourth-highest named mountain in the Ruby Mountains and the fifth-highest in Elko County, in the U.S. state of Nevada. It is the thirty-ninth-highest mountain in the state. It rises from the heads of both Thomas and Right Fork Canyons (branches of Lamoille Canyon), and is also part of the north wall of Box Canyon, making it a true glacial horn. The summit is a high-level ridge and is located about 24 miles (39 km) southeast of the community of Elko, within the Ruby Mountains Wilderness of the Ruby Mountains Ranger District in the Humboldt-Toiyabe National Forest.

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