| Island Mountain | |
|---|---|
  Island Mountain Location in California | |
| Highest point | |
| Elevation | 3,847 ft (1,173 m) NGVD 29[1] |
| Coordinates | 39°57′48″N 123°29′31″W / 39.9632061°N 123.4919661°W[2] |
| Geography | |
| Location | Trinity County, California, U.S. |
| Parent range | Range from Mendocino County to Trinity County |
| Topo map | USGS Bell Springs and Updegraff Ridge |
Island Mountain is a resistant formation of volcanic and metavolcanic rock in the Franciscan Assemblage of southwestern Trinity County, California. It was mined for sulfur metal deposits during the first half of the 20th century and was the final obstacle in the construction of a railroad line to Eureka, California in 1914. The name is applied to the range, the peak, a populated place and an abandoned railroad station, tunnel and bridge all but the first located within the S-bend of the Eel River which gave the peak its name.
- ^ "Island Mountain". ListsOfJohn.com. Retrieved 2014-03-03.
- ^ "Island Mountain". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.