Camas /ˈkæməs/ is a city in Clark County, Washington, with a population of 19,355 at the 2010 census. The east side of town borders the city of Washougal, Washington, and the west side of town borders Vancouver, Washington. Camas lies along the Washington side of the Columbia River, across from Troutdale, Oregon, and is part of the Portland metropolitan area.One of the major geographical features of the city is Prune Hill. Prune Hill is an extinct volcanic vent and is part of the Boring Lava Field of northwest Oregon and southwest Washington.