Grand Canyon National Park, a free government service (1938) poster by Chester Don Powell. Original public domain image from… https://www.rawpixel.com/image/8628551/image-art-vintage-public-domainFree Image from public domain licenseSupermoon at the Windows. Original public domain image from Flickr https://www.rawpixel.com/image/4033220/photo-image-moon-nature-mountainView licensePerson wearing headlight facing towards snow mountains. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3284894/free-photo-image-road-space-night-skyFree Image from public domain licenseBull elk searches for food beneath the snow. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4032668/photo-image-background-nature-mountainFree Image from public domain licenseFog rolling through the trees in Lamar Valley. Original public domain image from Flickr https://www.rawpixel.com/image/4032545/photo-image-background-tree-woodsFree Image from public domain licenseLady Bird Johnson Grove in Northern California. Original image from Carol M. Highsmith’s America, Library of Congress… https://www.rawpixel.com/image/422019/lady-bird-johnson-groveView licenseResidents Take Part in Organized Daily Exercises in One of the Public Pools at Century Village Retirement Community. https://www.rawpixel.com/image/8765608/photo-image-vintage-public-domain-womenFree Image from public domain licenseWolf portrait taken from a vehicle in a pullout. Original public domain image from Flickr https://www.rawpixel.com/image/4032621/photo-image-face-background-natureFree Image from public domain licenseBison group in the road near Frying Pan Spring. Original public domain image from Flickr https://www.rawpixel.com/image/4032753/photo-image-background-nature-landscapeFree Image from public domain licenseGunsight Mountain Post Sunset. Original public domain image from Flickr https://www.rawpixel.com/image/3311413/free-photo-image-mountain-landscape-glacierFree Image from public domain licenseThe Redwood National and State Parks. Original image from Carol M. Highsmith’s America, Library of Congress collection.… https://www.rawpixel.com/image/422014/tree-canopyView licenseBeautiful milky way, starry sky background. Original public domain image from Flickr https://www.rawpixel.com/image/4026746/photo-image-background-aesthetic-starFree Image from public domain licenseRock Creek Park, Washington, D.C. Original image from Carol M. Highsmith’s America, Library of Congress collection.… https://www.rawpixel.com/image/421726/rock-creek-parkView licenseUtility Building, Mammoth, Yellowstone National Park (P.W. Project F. P. 347),Sheet 1,American Bridge Company, Minneapolis… https://www.rawpixel.com/image/4032734/photo-image-background-blue-natureFree Image from public domain licenseYosemite National Park, United States. Original image from Carol M. Highsmith’s America, Library of Congress collection.… https://www.rawpixel.com/image/422042/yosemite-national-parkView licenseYosemite National Park. Original image from Carol M. Highsmith’s America, Library of Congress collection. Digitally enhanced… https://www.rawpixel.com/image/422023/yosemite-national-parkView licenseYosemite Valley, United States. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3284176/free-photo-image-sunset-winter-forest-lake-water-plantsFree Image from public domain licenseStony Indian Peaks Sunset. Original public domain image from Flickr https://www.rawpixel.com/image/3311430/free-photo-image-landscape-nature-pine-treeFree Image from public domain licenseThe majestic peaks of the Teton Range reflect in a mountain stream in Grand Teton National Park in northwestern Wyoming.… https://www.rawpixel.com/image/434429/the-teton-rangeView licenseA red fox prowls for voles, hidden beneath the snow, in Yellowstone National Park in the western U.S. state of Wyoming.… https://www.rawpixel.com/image/422046/fox-the-snowView licenseFree green botanical landscape image, public domain landscape CC0 photo. https://www.rawpixel.com/image/5923135/photo-image-light-public-domain-treesFree Image from public domain licenseView of the Milky Way over Cathedral Rock, seen from the Cathedral Rock Trailhead on Back O' Beyond Road, Coconino National… https://www.rawpixel.com/image/3388257/free-photo-image-landscape-aesthetic-arizonaFree Image from public domain licenseA red fox prowls for voles, hidden beneath the snow, in Yellowstone National Park in the western U.S. state of Wyoming.… https://www.rawpixel.com/image/434437/fox-the-snowView licenseA clear, blue lake with colorful canoes lined up on the shore; tall evergreen trees line one side while snow-capped… https://www.rawpixel.com/image/3283561/free-photo-image-lake-snow-forestFree Image from public domain licenseCanoe in twin lake. Original public domain image from Flickr https://www.rawpixel.com/image/3392227/free-photo-image-nature-mountains-mountain-travelFree Image from public domain licensePatterns in a dead lodgepole pine tree. Original public domain image from Flickr https://www.rawpixel.com/image/4032729/photo-image-background-texture-treeFree Image from public domain licenseBaily's beads Total Eclipse 2017. Taken in Arco, ID near Craters of the Moon National Monument and Preserve. Original public… https://www.rawpixel.com/image/4032636/photo-image-background-light-moonFree Image from public domain licenseSteamy sunrise over Roaring Mountain. Original public domain image from Flickr https://www.rawpixel.com/image/4032761/photo-image-background-moon-natureFree Image from public domain licenseLake McDonald Sunset at the Dock. Original public domain image from Flickr https://www.rawpixel.com/image/3311419/free-photo-image-landscape-people-portFree Image from public domain licenseLake McDonald Public Dock Sunrise. Original public domain image from Flickr https://www.rawpixel.com/image/3311287/free-photo-image-landscape-ice-mountain-lakeFree Image from public domain licensePost sunset color after Winter Solstice Sunset. Original public domain image from Flickr https://www.rawpixel.com/image/4032731/photo-image-background-moon-treeFree Image from public domain licenseMorning steam on the Madison River. Original public domain image from Flickr https://www.rawpixel.com/image/4032539/photo-image-background-bird-natureFree Image from public domain licenseFirst Lake & Mount Blackburn, Donoho Basin. Original public domain image from Flickr https://www.rawpixel.com/image/4039450/photo-image-cloud-tree-woodsFree Image from public domain licenseStormy skies move across a wide mountain landscape. Original public domain image from Flickr https://www.rawpixel.com/image/8732343/photo-image-clouds-aesthetic-lightFree Image from public domain licenseCampers at Garner State Park, 07/1972. Original public domain image from Flickr https://www.rawpixel.com/image/8765674/photo-image-vintage-beach-womanFree Image from public domain licenseFamily of zebra stand in a grassy savanna. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3305491/free-photo-image-animal-safari-animals-africaFree Image from public domain licenseGlacier National Park, Montana. Original image from Carol M. Highsmith’s America, Library of Congress collection. Digitally… https://www.rawpixel.com/image/3090585/free-photo-image-lake-forest-natureView licenseThe Milky Way above Grand Prismatic Spring. Original public domain image from Flickr https://www.rawpixel.com/image/4032705/photo-image-background-stars-woodsFree Image from public domain licenseMount McKinley or Denali ("The Great One") in Alaska. Original image from Carol M. Highsmith’s America, Library of Congress… https://www.rawpixel.com/image/421725/mount-mckinleyView licenseOrganized Daily Exercises at the Century Village Retirement Community. Photographer: Schulke, Flip, 1930-2008. Original… https://www.rawpixel.com/image/8765502/photo-image-vintage-women-personFree Image from public domain licenseFrosty morning in the Lower Geyser Basin. Original public domain image from Flickr https://www.rawpixel.com/image/4032732/photo-image-background-tree-woodsFree Image from public domain licenseHoar frost and fog at Tangled Creek. Original public domain image from Flickr https://www.rawpixel.com/image/4032575/photo-image-background-tree-woodsFree Image from public domain licenseWildflowers Below Clements Mountain. Original public domain image from Flickr https://www.rawpixel.com/image/3311438/free-photo-image-waterfall-flower-landscapeFree Image from public domain licenseP-35 and the Bears. You never know what our camera traps are going to capture. In early December 2015, we first see P-35 at… https://www.rawpixel.com/image/3394479/free-photo-image-aggressive-animal-bearFree Image from public domain licenseEndangered tribe, Batwa Pygmies people celebrating, Mgahinga Gorilla National Park, Uganda, September 2017. https://www.rawpixel.com/image/6198600/photo-image-public-domain-black-personFree Image from public domain licenseBurned trees at Trout Springs Rx Fire. Original public domain image from Flickr https://www.rawpixel.com/image/4039491/photo-image-background-light-treeFree Image from public domain licenseAn icy map of the Colorado River and its tributaries. Original public domain image from Flickr https://www.rawpixel.com/image/4033224/photo-image-texture-nature-iceFree Image from public domain licenseSurfing at Maui County's Hookipa Park, November 1973. Photographer: O'Rear, Charles. Original public domain image from Flickr https://www.rawpixel.com/image/8765530/photo-image-vintage-beach-wavesFree Image from public domain licenseBison bull, Blacktail Deer Plateau. Original public domain image from Flickr https://www.rawpixel.com/image/4039515/photo-image-background-tree-woodsFree Image from public domain licenseFoggy Sunrise, Blackail Deer Plateau. Original public domain image from Flickr https://www.rawpixel.com/image/4039494/photo-image-background-light-treeFree Image from public domain licenseBackcountry skiing in the Gallatin Mountains, USA. Original public domain image from Flickr https://www.rawpixel.com/image/4039508/photo-image-background-cloud-personFree Image from public domain licenseFilamentous bacteria at Mammoth Hot Springs. Original public domain image from Flickr https://www.rawpixel.com/image/4039404/photo-image-background-texture-abstractFree Image from public domain licenseHikers at Cutbank Pass Panorama. Original public domain image from Flickr https://www.rawpixel.com/image/3312494/free-photo-image-hiking-landscape-travelling-destinationFree Image from public domain licenseThe moon framed by the saddle of Electric Peak, USA. Original public domain image from Flickr https://www.rawpixel.com/image/4032581/photo-image-background-moon-treeFree Image from public domain licenseView of cactus and surrounding area "Saguaros, Saguaro National Monument," Arizona. Photographer: Adams, Ansel, 1902-1984.… https://www.rawpixel.com/image/8799940/photo-image-plant-vintage-public-domainFree Image from public domain license