The term Marble Mountains is a common term for the northwestern portion of the Salmon Mountains range in northwestern California. The Salmon Mountains are themselves a sub-range of the Klamath Mountains, which are a constituent part of the greater Northwest U.S. Coast Ranges. The local name derives from Marble Mountain and Black Marble Mountain, prominent peaks and the namesake of the surrounding Marble Mountain Wilderness Area. The term "Marble Mountains" is commonly applied not only to the ridges of Marble Mountain and Black Marble Mountain themselves but as a name for the northwestern ranges of the Salmon Mountains.