The All-American Canal under construction, Imperial County, California. This big earth ditch will open new territory for… https://www.rawpixel.com/image/12244398/photo-image-person-sky-earthFree Image from public domain licenseThe All-American Canal under construction, Imperial County, California. This big earth ditch will open new territory for… https://www.rawpixel.com/image/12245972/photo-image-sky-mountain-earthFree Image from public domain licenseThe All-American Canal under construction, Imperial County, California. This big earth ditch will open new territory for… https://www.rawpixel.com/image/12245601/photo-image-person-sky-earthFree Image from public domain licenseProduction. Magnesium. Workers' cars parked under a section of the high-tension transmission lines which bring electrical… https://www.rawpixel.com/image/12308625/image-plant-sky-linesFree Image from public domain license