California, USA
40.68 N, 121.55 W 
  summit elevation 2191 m 
  Cinder cones
Tumble Buttes  Volcano is located in northern California. The volcano consists of a series of  cinder cones along a fissure. 
  Devils Rock Garden is a blocky lava  flow which extends south of the volcano.
Bear Wallow Butte is the southernmost vent of the chain, and is composed of a cinder cone and andesite lava flows.
Further Reading
  Wood C A, Kienle J (eds), 1990. Volcanoes of North America. Cambridge, England: Cambridge Univ Press, 354 p.
15,000 years ago