Klamath, mountain range, part of Pacific Coast Ranges extending c.240 mi (368 km) from SW Oregon to NW California. The Klamath Mts. are part of numerous national forest and wildlife preserves and contain scenic portions of the Klamath River, rising in Upper Klamath Lake, and the Sacramento River. The highest point is Mt. Eddy (9,038 ft/2,755 m). Hiking and game hunting are popular activities along the mountain range. Tourism, fishing, and lumber industries are chief sources of income for many of the towns in the mountain region, such as Klamath Falls.