Proper noun
Mount Diablo
A mountain in Contra Costa County, California.
Residents on the east end of Mount Diablo Boulevard might be hearing loud "popping" noises as EBMUD installs the new metal roof to the new Diablo Vista Pumping Plant. Source: Internet
In Township 25 North, Range 17 East, Mount Diablo Meridian, according to the official plat thereof. Source: Internet
Preston started her nonprofit career in Moraga in 1986 when she decided to start the Mount Diablo chapter of "Habitat for Humanity." Source: Internet