Humboldt–Toiyabe National Forest is Nevada’s principal national forest and the largest national forest reservation in the United States outside Alaska, with additional lands in eastern California. Rather than one continuous tract, it consists of scattered mountain ranges and basins spread across much of Nevada and a strip of California, giving it unusually varied landscapes. Its present form emerged through several federal reorganizations between 1906 and 1957, beginning with the Ruby Mountains National Forest and culminating in the division of Nevada National Forest lands between Humboldt and Toiyabe. Since 1995, the two forests have shared one administration while remaining legally and geographically distinct.