Spectacular Yosemite Falls, Yosemite National Park. Original image from Carol M. Highsmith’s America, Library of… https://www.rawpixel.com/image/421873/free-photo-image-waterfall-carol-highsmith-mountainFree Image from public domain licenseYosemite Valley, California is located on the western slope of the Sierra Nevada mountains, 150 miles (240 km) due east of… https://www.rawpixel.com/image/421750/free-photo-image-mount-carol-californiaFree Image from public domain licenseYosemite National Park, USA. Original image from Carol M. Highsmith’s America, Library of Congress collection.… https://www.rawpixel.com/image/434107/free-photo-image-alpine-america-americanFree Image from public domain licenseAircraft taking off from Ronald Reagan National Airport is seen passing in front of the Moon as it rises in Washington… https://www.rawpixel.com/image/440573/free-photo-image-moon-ship-planeFree Image from public domain licenseA very long and very brown road in the Mojave National Preserve in California. Original image from Carol M.… https://www.rawpixel.com/image/434169/free-photo-image-road-desert-wayFree Image from public domain licenseView of Monument Valley in Arizona, USA. Old Mammoth Road. Original image from Carol M. Highsmith’s America, Library… https://www.rawpixel.com/image/433877/monument-valley-arizonaFree Image from public domain licenseThe Lower Falls of the Yellowstone River in northwestern Wyoming's Yellowstone National Park. Twice as high as Niagara Falls… https://www.rawpixel.com/image/434431/free-photo-image-public-domain-waterfalls-national-parks-yellowstone-parkFree Image from public domain licenseYellowstone National Park Mammoth Hot Springs. Original image from Carol M. Highsmith’s America, Library of Congress… https://www.rawpixel.com/image/433757/free-photo-image-yellowstone-mammoth-mountain-national-parkFree Image from public domain licenseUtah's Zion National Park. Original image from Carol M. Highsmith’s America, Library of Congress collection. Digitally… https://www.rawpixel.com/image/421898/free-photo-image-zion-black-and-white-photography-photos-national-parkFree Image from public domain licenseMonument Valley Navajo Tribal Park, USA. Old Mammoth Road. Original image from Carol M. Highsmith’s America, Library… https://www.rawpixel.com/image/434024/free-photo-image-desert-arizona-valleyFree Image from public domain licenseTrout stream at the Ranch A Education Center near Buelah, Wyoming. Original image from Carol M. Highsmith’s America… https://www.rawpixel.com/image/434369/free-photo-image-creek-wyoming-sandFree Image from public domain licenseA landscape view of Alaska - Original image from Carol M. Highsmith’s America, Library of Congress collection.… https://www.rawpixel.com/image/433768/free-photo-image-snow-denali-national-park-black-and-white-photosFree Image from public domain licenseUtah's Zion National Park. Original image from Carol M. Highsmith’s America, Library of Congress collection. Digitally… https://www.rawpixel.com/image/421899/free-photo-image-wallpaper-washington-state-americaFree Image from public domain licenseA portion of Great Sand Dunes National Monument and Preserve. Original image from Carol M. Highsmith’s America… https://www.rawpixel.com/image/434577/pink-sand-dunesFree Image from public domain licenseA living sno-globe scene and winter wonderland, created by a sudden mountain blizzard along California Highway 36. Original… https://www.rawpixel.com/image/422027/free-photo-image-winter-carol-highsmith-mountain-roadFree Image from public domain licenseMount McKinley or Denali ("The Great One") in Alaska is the highest mountain peak in North America, at a height of… https://www.rawpixel.com/image/421723/free-photo-image-alaska-tourism-nature-backgroundFree Image from public domain licenseView from right on top of the tallest dune in North America at Great Sand Dunes National Park and Preserve, in the San Luis… https://www.rawpixel.com/image/434649/free-photo-image-sand-beach-patternFree Image from public domain licenseAloe from the Lady Bird Johnson Wildflower Center, part of the University of Texas at Austin. Original image from Carol M.… https://www.rawpixel.com/image/434244/aloeFree Image from public domain licenseThe mighty Lower Falls of the Yellowstone River in Yellowstone National Park in northwestern Wyoming. Falling 308 feet, they… https://www.rawpixel.com/image/582734/carol-highsmiths-wyoming-photographFree Image from public domain licenseYosemite National Park, United States. Original image from Carol M. Highsmith’s America, Library of Congress… https://www.rawpixel.com/image/422040/free-photo-image-mountain-yosemite-carol-highsmithFree Image from public domain licenseYosemite National Park, United States. Original image from Carol M. Highsmith’s America, Library of Congress… https://www.rawpixel.com/image/422036/free-photo-image-black-and-white-photography-california-landscapeFree Image from public domain licenseYosemite National Park. Original image from Carol M. Highsmith’s America, Library of Congress collection. Digitally… https://www.rawpixel.com/image/422028/free-photo-image-california-black-and-white-travel-photos-landscapeFree Image from public domain licenseYosemite National Park. Original image from Carol M. Highsmith’s America, Library of Congress collection. Digitally… https://www.rawpixel.com/image/422037/free-photo-image-mountain-forest-californiaFree Image from public domain licenseYosemite National Park. Original image from Carol M. Highsmith’s America, Library of Congress collection. Digitally… https://www.rawpixel.com/image/422031/free-photo-image-landscape-california-usa-national-parksFree Image from public domain licenseYosemite National Park. Original image from Carol M. Highsmith’s America, Library of Congress collection. Digitally… https://www.rawpixel.com/image/422025/free-photo-image-landscape-carol-highsmith-forestFree Image from public domain licenseGuides (ahead and behind) lead visitors on a mule ride down Bright Angel Trail into the gorge at Grand Canyon National Park… https://www.rawpixel.com/image/582332/carol-highsmiths-arizona-photographFree Image from public domain licenseYosemite National Park, USA. Original image from Carol M. Highsmith’s America, Library of Congress collection.… https://www.rawpixel.com/image/434106/yosemite-national-parkFree Image from public domain licenseU.S. Army Rangers assigned to the 1st Battalion, 75th Ranger Regiment, based at Hunter Army Airfield, Savannah, Ga., conduct… https://www.rawpixel.com/image/4040910/photo-image-nature-waterFree Image from public domain licenseU.S. Army Rangers assigned to the 1st Battalion, 75th Ranger Regiment, based at Hunter Army Airfield, Savannah, Ga., conduct… https://www.rawpixel.com/image/4041029/photo-image-green-diamondFree Image from public domain licenseU.S. Army Rangers assigned to the 1st Battalion, 75th Ranger Regiment, based at Hunter Army Airfield, Savannah, Ga., conduct… https://www.rawpixel.com/image/4040915/photo-image-water-sportsFree Image from public domain licenseU.S. Army Rangers assigned to the 1st Battalion, 75th Ranger Regiment, based at Hunter Army Airfield, Savannah, Ga., conduct… https://www.rawpixel.com/image/4043537/photo-image-plant-green-natureFree Image from public domain licenseU.S. Army Rangers assigned to the 1st Battalion, 75th Ranger Regiment, based at Hunter Army Airfield, Savannah, Ga., conduct… https://www.rawpixel.com/image/4040906/photo-image-green-natureFree Image from public domain licenseU.S. Army Rangers assigned to the 1st Battalion, 75th Ranger Regiment, based at Hunter Army Airfield, Savannah, Ga., conduct… https://www.rawpixel.com/image/4043524/photo-image-person-nature-buildingFree Image from public domain licenseU.S. Army Rangers assigned to the 1st Battalion, 75th Ranger Regiment, based at Hunter Army Airfield, Savannah, Ga., conduct… https://www.rawpixel.com/image/4041027/photo-image-light-greenFree Image from public domain licenseA portion of the largest pueblo at the Wupatki National Monument, a National Park Service-protected settlement of structures… https://www.rawpixel.com/image/582425/carol-highsmiths-arizona-photographFree Image from public domain licensePre-Columbian peoples used these ledges as protection from rain and snow in Walnut Canyon National Monument, located about… https://www.rawpixel.com/image/582346/carol-highsmiths-arizona-photographFree Image from public domain licenseThe Redwood National and State Parks along the coast of northern California. Original image from Carol M. Highsmith’s… https://www.rawpixel.com/image/434094/free-photo-image-forest-trees-environmentFree Image from public domain licenseYosemite National Park. Original image from Carol M. Highsmith’s America, Library of Congress collection. Digitally… https://www.rawpixel.com/image/422039/free-photo-image-black-and-white-forest-carol-highsmith-photographyFree Image from public domain licenseYosemite National Park, United States. Original image from Carol M. Highsmith’s America, Library of Congress… https://www.rawpixel.com/image/422041/free-photo-image-mount-volcanic-rock-carolFree Image from public domain licenseBend in the roadway along the southern reaches of the Blue Ridge Parkway, near Linville, North Carolina. Original image from… https://www.rawpixel.com/image/434612/free-photo-image-smoky-mountains-carol-highsmith-long-roadFree Image from public domain licensePrince William Sound is a sound of the Gulf of Alaska on the south coast of the U.S. state of Alaska. Original image from… https://www.rawpixel.com/image/421732/free-photo-image-mountains-forest-aesthetic-nature-photosFree Image from public domain licenseBagpipesYAVORIV, Ukraine --John McAlister, a Belfast, Ireland native assigned to the United Kingdom's Royal Irish Regiment… https://www.rawpixel.com/image/4040506/photo-image-person-microphoneFree Image from public domain licenseThe GOES-K weather satellite lifts off from Launch Pad 36B at Cape Canaveral Air Station on an Atlas 1 rocket. Original from… https://www.rawpixel.com/image/441518/free-photo-image-spaceship-america-americas-public-domainFree Image from public domain licenseBadlands National Park, in southwest South Dakota, United States. Original image from Carol M. Highsmith’s America… https://www.rawpixel.com/image/421739/free-photo-image-landscape-carol-highsmith-badlandsFree Image from public domain licenseYosemite National Park. Original image from Carol M. Highsmith’s America, Library of Congress collection. Digitally… https://www.rawpixel.com/image/422018/yosemite-national-parkFree Image from public domain licenseTesting autonomous software for AARD program using a NASA F/A-18 #845 following a chartered Sabreliner, June 27th, 2006.… https://www.rawpixel.com/image/440709/free-photo-image-plane-air-force-aircraftFree Image from public domain licenseA view of Arizona’s scenic Salt River Canyon. Original image from Carol M. Highsmith’s America, Library of… https://www.rawpixel.com/image/582286/carol-highsmiths-arizona-photographFree Image from public domain licensePoint Iroquois Light Station in upper MIchigan's Hiawatha National Forest stands on the point on Lake Superior where… https://www.rawpixel.com/image/595026/carol-highsmiths-michigan-photographFree Image from public domain licenseAn American Indian historical interpreter at Fort Laramie National Historic Site in Goshen County, Wyoming. https://www.rawpixel.com/image/582721/carol-highsmiths-wyoming-photographFree Image from public domain licenseThe National Balloon Classic in Indianola, US. Original image from Carol M. Highsmith’s America, Library of Congress… https://www.rawpixel.com/image/422053/free-photo-image-night-hot-air-balloons-carol-highsmithFree Image from public domain licenseAloe from the Lady Bird Johnson Wildflower Center, part of the University of Texas at Austin but located 10 miles south of… https://www.rawpixel.com/image/434249/free-photo-image-aloe-succulent-birdFree Image from public domain licenseTorres del Paine National Park, Chile. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3282614/free-photo-image-park-cc0-chileFree Image from public domain licensePrince William Sound is a sound of the Gulf of Alaska on the south coast of the U.S. state of Alaska. Original image from… https://www.rawpixel.com/image/421712/free-photo-image-ice-iceberg-riverFree 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/421715/free-photo-image-snow-winter-backgroundFree Image from public domain licensePrince William Sound is a sound of the Gulf of Alaska on the south coast of the U.S. state of Alaska. Original image from… https://www.rawpixel.com/image/421730/free-photo-image-mountain-carol-highsmith-forestFree Image from public domain licenseNASA scientists are flying over Alaska and Canada, measuring the elevation of rivers and lakes. Original from NASA.… https://www.rawpixel.com/image/440080/river-drone-shotFree Image from public domain licenseMuir Woods. Original image from Carol M. Highsmith’s America, Library of Congress collection. Digitally enhanced by… https://www.rawpixel.com/image/421806/free-photo-image-forests-sequoia-coastFree Image from public domain license"Flat Tops" -- a range of the Rocky Mountains Colorado - Original image from Carol M. Highsmith’s America, Library of… https://www.rawpixel.com/image/434639/the-rocky-mountains-coloradoFree Image from public domain licenseSpecial Rescue Operations firefighters with NASA Fire Rescue Services at NASA’s Kennedy Space Center. Original from… https://www.rawpixel.com/image/439900/free-photo-image-firefighter-fire-manFree Image from public domain licenseUtah's Red Canyon. Old Mammoth Road. Original image from Carol M. Highsmith’s America, Library of Congress collection.… https://www.rawpixel.com/image/433890/free-photo-image-tourism-desert-canyonFree Image from public domain licenseHat Rock in Hat Rock State Park in Oregon. Old Mammoth Road. Original image from Carol M. Highsmith’s America, Library… https://www.rawpixel.com/image/433930/free-photo-image-desert-landscape-rock-carol-highsmithFree Image from public domain licenseUtah's Valley of the Gods. Old Mammoth Road. Original image from Carol M. Highsmith’s America, Library of Congress… https://www.rawpixel.com/image/433875/free-photo-image-desert-landscape-americaFree Image from public domain licenseNational Cathedral, Washington D.C. Original image from Carol M. Highsmith’s America, Library of Congress collection.… https://www.rawpixel.com/image/433883/free-photo-image-architecture-church-famous-landmarkFree Image from public domain licenseAn elk forages in the northernmost Wyoming reaches of Yellowstone National Park. Original image from Carol M.… https://www.rawpixel.com/image/3093648/free-photo-image-america-animal-carol-highsmithFree Image from public domain licenseParatroopers assigned to the 4th Infantry Brigade Combat Team (Airborne). Original public domain image from Flickr https://www.rawpixel.com/image/4032031/photo-image-people-manFree Image from public domain licenseA crocodile is seen from above while it rests on the banks of the Mara River as a Governor's Balloon Safari floats over the… https://www.rawpixel.com/image/8812027/photo-image-plant-balloon-public-domainFree Image from public domain licenseWater Fall at Yellowstone National Park. Original image from Carol M. Highsmith’s America, Library of Congress… https://www.rawpixel.com/image/421923/free-photo-image-nature-sequoia-cliffsFree Image from public domain licenseYosemite National Park, USA. Original image from Carol M. Highsmith’s America, Library of Congress collection.… https://www.rawpixel.com/image/434187/free-photo-image-black-and-white-mountain-forestFree Image from public domain licenseCrater Lake, Oregon. Original image from Carol M. Highsmith’s America, Library of Congress collection. Digitally… https://www.rawpixel.com/image/422048/free-photo-image-landscape-carol-highsmith-volcanoFree Image from public domain licenseYosemite National Park. Original image from Carol M. Highsmith’s America, Library of Congress collection. Digitally… https://www.rawpixel.com/image/422038/free-photo-image-mountain-nature-forestFree Image from public domain licenseYosemite National Park, United States. Original image from Carol M. Highsmith’s America, Library of Congress… https://www.rawpixel.com/image/422035/free-photo-image-mountain-stream-madera-carol-highsmithFree Image from public domain licenseLincoln Memorial taken from the Washington Monument. Original image from Carol M. Highsmith’s America, Library of… https://www.rawpixel.com/image/421745/free-photo-image-washington-carol-highsmith-dcFree Image from public domain licenseA living snow globe scene and winter wonderland, created by a sudden mountain blizzard along California Highway 36. Original… https://www.rawpixel.com/image/422032/free-photo-image-road-snow-winterFree Image from public domain licenseAloe from the Lady Bird Johnson Wildflower Center, part of the University of Texas at Austin. Original image from Carol M.… https://www.rawpixel.com/image/434240/free-photo-image-aloe-vera-texas-water-plantsFree Image from public domain licenseAloe from the Lady Bird Johnson Wildflower Center, part of the University of Texas at Austin but located 10 miles south of… https://www.rawpixel.com/image/434242/free-photo-image-black-and-white-lady-texasFree Image from public domain licenseAloe from the Lady Bird Johnson Wildflower Center, part of the University of Texas at Austin. Original image from Carol M.… https://www.rawpixel.com/image/434237/free-photo-image-aloe-texas-veraFree Image from public domain licenseRemains of Tuzigoot, a 110-room stone pueblo in Arizona’s Verde Valley whose oldest rooms date to 1100 A.D. or so, was… https://www.rawpixel.com/image/582361/carol-highsmiths-arizona-photographFree Image from public domain licenseTerrain in the Arizona-Sonora Desert Museum -- a botanical garden, natural-history museum, and zoo in a single facility --… https://www.rawpixel.com/image/582273/carol-highsmiths-arizona-photographFree Image from public domain licenseOlympic National Park. Original image from Carol M. Highsmith’s America, Library of Congress collection. Digitally… https://www.rawpixel.com/image/421819/free-photo-image-moss-pine-tree-view-forestFree Image from public domain licenseView of Salt River Canyon, which bisects the entire length of a 32,101-acre wilderness area within the Tonto National Forest… https://www.rawpixel.com/image/582313/carol-highsmiths-arizona-photographFree Image from public domain licenseCornell University, Infrared Interferometer mission directors console. Original from NASA. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/440063/free-photo-image-nasa-room-technologyFree Image from public domain licenseA living sno-globe scene and winter wonderland, created by a sudden mountain blizzard along California Highway 36, south of… https://www.rawpixel.com/image/2109858/carol-highsmiths-californiaFree Image from public domain licenseThis is not a fire in the distance, near the settlement of Ganado on Navajo Nation land in far northeast Arizona. It’s… https://www.rawpixel.com/image/582341/carol-highsmiths-arizona-photographFree Image from public domain licenseExterior detail, Federal Building and U.S. Courthouse, Fargo, North Dakota (2010) by Carol M. Highsmith. Original image from… https://www.rawpixel.com/image/591528/carol-highsmiths-north-dakota-photographFree Image from public domain licenseU.S. Army Rangers assigned to the 1st Battalion, 75th Ranger Regiment, based at Hunter Army Airfield, Savannah, Ga., conduct… https://www.rawpixel.com/image/4040903/photo-image-person-natureFree Image from public domain licenseA portion of the deep Black Canyon of the Gunnison River, near Montrose, Colorado. https://www.rawpixel.com/image/582517/carol-highsmiths-colorado-photographFree Image from public domain licenseAutumnal view of Rocky Mountain peaks called the Maroon Bells, between Pitkin County and Gunnison County, Colorado. Original… https://www.rawpixel.com/image/422056/rocky-mountain-peaksFree Image from public domain licenseView of Salt River Canyon, which bisects the entire length of a 32,101-acre wilderness area within the Tonto National Forest… https://www.rawpixel.com/image/582303/carol-highsmiths-arizona-photographFree 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/422017/free-photo-image-forest-landscape-tree-viewFree Image from public domain licenseBison cow nursing calf on the road in Lamar Valley by Neal Herbert. Original public domain image from Flickr https://www.rawpixel.com/image/4039189/photo-image-animal-public-domainFree Image from public domain licenseScenic view from the Seward Highway in the Chugach National Forest. Original image from Carol M. Highsmith’s America… https://www.rawpixel.com/image/421754/free-photo-image-meadow-landscape-carol-highsmithFree Image from public domain licenseA landscape view of Alaska - Original image from Carol M. Highsmith’s America, Library of Congress collection.… https://www.rawpixel.com/image/433766/free-photo-image-ice-forest-glaciersFree Image from public domain licenseThe Olympic National Park has to be one of America’s most diverse national park landscapes. Original from NASA.… https://www.rawpixel.com/image/440091/free-photo-image-satellite-nasa-olympic-national-parkFree Image from public domain licenseBoeing's X-48B in flight. 2006-10-24. Original from NASA. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/440730/free-photo-image-army-nasa-t-34Free Image from public domain license