Southern Oregon Coast Range

Southern Oregon Coast Range
Cow Creek, a tributary of the South Umpqua River
Highest point
Peak	Bone Mountain
Elevation	3,540 ft (1,080 m)
Coordinates	42°54′58″N 123°51′00″W / 42.91611°N 123.85000°W / 42.91611; -123.85000
Dimensions
Length	55 mi (89 km) North-South
Geography
Southern Oregon Coast Range
Country	United States
State	Oregon
Parent range	Oregon Coast Range, Pacific Coast Ranges
Borders on	Central Oregon Coast Range and Klamath Mountains
Geology
Age of rock	Paleocene and Eocene
Type of rock	volcanic and forearc basin

The Southern Oregon Coast Range is the southernmost section of the Oregon Coast Range, in the Pacific Coast Ranges, located in the southwest portion of the state of Oregon, United States, roughly between the Umpqua River and the middle fork of the Coquille River, beyond which are the Klamath Mountains. To the east is the Umpqua Valley and to the west the Pacific Ocean. This approximately 55-mile (89 km)-long mountain range contains mountains as high as 3,547 feet (1,081 m) for Bone Mountain. The mountains are known locally in the Roseburg area as the Callahan Mountains, or simply as The Callahans.^[1]