Callanish, Isle of Lewis, Outer Hebrides: prehistoric standing stones (menhirs). Watercolour by Sir G. Hardy, 1862. https://www.rawpixel.com/image/13957568/image-cloud-plant-personFree Image from public domain licenseA Prehistoric Stone Circle on a Mound, an Extensive Landscape Beyond by Johann Heinrich Wilhelm Tischbein https://www.rawpixel.com/image/9085820/image-prehistoric-water-color-ground-line-artFree Image from public domain licenseThe Crystal Palace from the Great Exhibition, installed at Sydenham: sculptures of prehistoric creatures in the foreground.… https://www.rawpixel.com/image/13969431/image-art-sky-waterFree Image from public domain license A portion of the Carhenge outdoor monument to automobiles near Alliance in northwest Nebraska, built… https://www.rawpixel.com/image/8042858/photo-image-plant-grass-skyFree Image from public domain license"Uncle" makes a prehistoric ? discovery (27 February 1921) by Leslie Adkin. https://www.rawpixel.com/image/13029190/uncle-makes-prehistoric-discovery-27-february-1921-leslie-adkinFree Image from public domain licenseCallanish, Isle of Lewis, Outer Hebrides: prehistoric standing stones (menhirs). Watercolour by Sir G. Hardy, 1862. https://www.rawpixel.com/image/13966614/image-cloud-plant-personFree Image from public domain license Those who have heard of Kansas know that much of it is famously flat, with some rolling hills and… https://www.rawpixel.com/image/8041593/photo-image-cloud-sky-beachFree Image from public domain license A one-car sample of the Carhenge outdoor monument to automobiles near Alliance in northwest… https://www.rawpixel.com/image/8070202/photo-image-plant-tree-artFree Image from public domain license Odd metal art adjacent to the Carhenge outdoor monument to automobiles near Alliance in northwest… https://www.rawpixel.com/image/8070446/photo-image-plant-tree-artFree Image from public domain licenseStonehenge, prehistoric monument in England. Free public domain CC0 image. https://www.rawpixel.com/image/6031657/photo-image-public-domain-plant-natureFree Image from public domain license A portion of the Carhenge outdoor monument to automobiles near Alliance in northwest Nebraska, built… https://www.rawpixel.com/image/8046441/photo-image-art-sky-public-domainFree Image from public domain license A portion of the Carhenge outdoor monument to automobiles near Alliance in northwest Nebraska, built… https://www.rawpixel.com/image/8041379/photo-image-sunset-plant-grassFree Image from public domain license A portion of the Carhenge outdoor monument to automobiles near Alliance in northwest Nebraska, built… https://www.rawpixel.com/image/8044071/photo-image-plant-grass-artFree Image from public domain license A portion of the Carhenge outdoor monument to automobiles near Alliance in northwest Nebraska, built… https://www.rawpixel.com/image/8044486/photo-image-sky-technology-roadFree Image from public domain licenseA prehistoric man defends his family from an attacking bear: the man's family huddle together in a cave, while mammoths, a… https://www.rawpixel.com/image/13963536/image-plant-tiger-personFree Image from public domain license Those who have heard of Kansas know that much of it is famously flat, with some rolling hills and… https://www.rawpixel.com/image/8105588/photo-image-cloud-sky-beachFree Image from public domain licenseThree papaya trees (Carica papaya) with lizards, dodos and a man hunting in an exotic, tropical landscape. Etching, c. 1671. https://www.rawpixel.com/image/13968142/image-paper-cartoon-plantsFree Image from public domain licenseStonehenge in Salisbury Plain in Wiltshire, England. Free public domain CC0 photo. https://www.rawpixel.com/image/6017735/photo-image-public-domain-circle-freeFree Image from public domain license Those who have heard of Kansas know that much of it is famously flat, with some rolling hills and… https://www.rawpixel.com/image/8041437/photo-image-sky-ocean-beachFree Image from public domain license Those who have heard of Kansas know that much of it is famously flat, with some rolling hills and… https://www.rawpixel.com/image/8041517/photo-image-sky-ocean-beachFree Image from public domain license Those who have heard of Kansas know that much of it is famously flat, with some rolling hills and… https://www.rawpixel.com/image/8061396/photo-image-cloud-sky-beachFree Image from public domain license Those who have heard of Kansas know that much of it is famously flat, with some rolling hills and… https://www.rawpixel.com/image/8070387/photo-image-sky-sand-mountainFree Image from public domain license