Animal footprint tracks in the snow at Ilulissat, Greenland https://www.rawpixel.com/image/2314975/premium-photo-image-ice-snow-footprints-snow-tracksView licenseBeautiful beach scenery with footprints in the sand https://www.rawpixel.com/image/3111236/free-photo-image-mountain-beach-beautifulView license[Untitled photo, possibly related to: Creede, Colorado. Lead and silver mining in a former "ghost town"]. Sourced from the… https://www.rawpixel.com/image/12297247/photo-image-plant-tree-roadFree Image from public domain licenseSilver Bow County, Montana. Railroad line. Sourced from the Library of Congress. https://www.rawpixel.com/image/12286808/photo-image-plant-sky-forestFree Image from public domain license[Untitled photo, possibly related to: Carloads of iron ore at Mahoning pit. Hibbing, Minnesota]. Sourced from the Library of… https://www.rawpixel.com/image/12286526/photo-image-steam-person-smokeFree Image from public domain license[Untitled photo, possibly related to: Carloads of iron ore at Mahoning pit. Hibbing, Minnesota]. Sourced from the Library of… https://www.rawpixel.com/image/12286320/photo-image-steam-person-smokeFree Image from public domain license[Untitled photo, possibly related to: World's largest open pit mine, Hull Rust Mahoning. Near Hibbing, Minnesota]. Sourced… https://www.rawpixel.com/image/12285051/photo-image-plant-road-mountainFree Image from public domain license[Untitled photo, possibly related to: Northern Pacific freight train going over Bozeman Pass. Gallatin County, Montana].… https://www.rawpixel.com/image/12273581/photo-image-plant-sky-forestFree Image from public domain licenseMoving railroad track in the Mahoning pit. Hibbing, Minnesota. Sourced from the Library of Congress. https://www.rawpixel.com/image/12334407/image-person-sky-airplaneFree Image from public domain license[Untitled photo, possibly related to: North Conway, New Hampshire, from Cranmore Mountain. Presidential range of White… https://www.rawpixel.com/image/12248449/photo-image-plant-person-skyFree Image from public domain licenseUtah Copper: Bingham Mine. Part of the open-pit workings of the Utah Copper Company, at Bingham Canyon, Utah. The steam… https://www.rawpixel.com/image/12302874/image-steam-mountain-natureFree Image from public domain licenseOne of the traveling towers which connects with the central tower from which material for Shasta Dam is transported. Shasta… https://www.rawpixel.com/image/12149659/image-art-vintage-roadFree Image from public domain license