English PitRiverValley, Modoc County, California, United States applies to jurisdiction: United States of America determination method: work of the federal
Attribution-Share Alike 2.0 Generic license. Attribution: Former gravel pit, Blackwater RiverValley by Alan Hunt You are free: to share – to copy, distribute and
Attribution-Share Alike 2.0 Generic license. Attribution: Disused Gravel Pits, Blackwater RiverValley by Alan Hunt You are free: to share – to copy, distribute and
Generic license. Attribution: Reclaiming an area of old gravel pits in the Drumaness Rivervalley by Eric Jones You are free: to share – to copy, distribute