Aurora borealis on a night sky over silhouettes of trees. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3285190/free-photo-image-background-northern-lights-aurora-borealisFree Image from public domain licenseFern leaves in the forest of Oahu, Hawaii https://www.rawpixel.com/image/437302/tropical-fern-leafView licenseScenic view of the Sierra Nevada, United States https://www.rawpixel.com/image/437320/country-roadView licenseJulia Pfeiffer Burns State Park, Big Sur, United States. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3285511/free-photo-image-ocean-beach-summerFree Image from public domain licenseA thick fog in a forest with a thick layer of brown leaves on its floor. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3284030/free-photo-image-forest-birch-png-fogFree Image from public domain licenseHorses in golden fields at Belo Horizonte, Brazil https://www.rawpixel.com/image/437396/wild-horseView licenseSummer storms over the Grand Canyon https://www.rawpixel.com/image/427017/grand-canyon-landscapeView licenseCottage Rural Scene Mountain Lake Countryside Concept https://www.rawpixel.com/image/14907177/cottage-rural-scene-mountain-lake-countryside-conceptView licenseBackpacker friends on an adventure https://www.rawpixel.com/image/14998043/backpacker-friends-adventureView licenseDrone shot of Raven Crag and Thirlmere reservoir at the Lake District in England https://www.rawpixel.com/image/14998063/image-search-bar-mountain-natureView licenseCouple hiking together in the wilderness https://www.rawpixel.com/image/14941139/couple-hiking-together-the-wildernessView licenseAutumn pine forest vegetation landscape outdoors. https://www.rawpixel.com/image/14900220/autumn-pine-forest-vegetation-landscape-outdoorsView licenseCouple hiking together in the wilderness https://www.rawpixel.com/image/14940629/couple-hiking-together-the-wildernessView licenseCouple hiking together in the wilderness https://www.rawpixel.com/image/14940630/couple-hiking-together-the-wildernessView licenseThe Dolomites shrouded by the mist during autumn https://www.rawpixel.com/image/14915015/the-dolomites-shrouded-the-mist-during-autumnView licenseLooking upward to the starry night sky from a ravine. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3285253/free-photo-image-sky-night-natureFree 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 licenseWilderness landscape mountain outdoors design https://www.rawpixel.com/image/11996625/image-background-paper-plantView licenseYosemite National Park. Original image from Carol M. Highsmith’s America, Library of Congress collection. Digitally… https://www.rawpixel.com/image/422023/yosemite-national-parkFree Image from public domain licenseA macro shot of a frog sitting in a green pond in Palmyra, New Jersey. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3284639/free-photo-image-green-water-natureFree Image from public domain licenseColorful hot air balloons fly and float over a desert landscape. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3283049/free-photo-image-nature-landscape-hot-air-balloonFree Image from public domain licenseSeashore at Twelve Apostles, Princetown, Australia. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3285640/free-photo-image-australia-beach-public-domainFree Image from public domain licenseA woman with a large backpack walking through a forest. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3284600/free-photo-image-woman-hiking-people-nature-jungleFree Image from public domain licenseThe 7,472-acre Headwaters Forest Reserve was established in 1999 after a decade-long grassroots effort to protect the… https://www.rawpixel.com/image/3393372/free-photo-image-america-botanical-cc0Free Image from public domain licenseDesert during nighttime. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286261/free-photo-image-desert-astronomy-travelFree Image from public domain licenseA blue spotlight put onto the starlit sky at the bottom of rock formations in Stakkholtsgjá, Iceland. Original public domain… https://www.rawpixel.com/image/3285395/free-photo-image-underwater-cave-auroraFree Image from public domain licenseThe Milky Way in the blue night sky above the forest at Blue Rock Estate. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3285174/free-photo-image-cloud-galaxy-milky-wayFree Image from public domain licenseSquirrel jumps upon a tree. Original public domain image from Flickr https://www.rawpixel.com/image/3370587/free-photo-image-nature-climb-tree-animalFree Image from public domain licenseA white horse in a field at Chevals Horse Riding Center Vale do Sol, Nova Lima, Brazil https://www.rawpixel.com/image/437366/white-riding-horseView licenseWoman exploring the forest in Stone Mountain State Park, Roaring Gap, United States. Original public domain image from… https://www.rawpixel.com/image/3284464/free-photo-image-forest-woman-winterFree Image from public domain licenseFog covers a desolate farm field on a misty day. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286160/free-photo-image-mist-fog-landscape-backgroundFree Image from public domain licenseRipples on the surface of a lake with a view on tall mountains. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3305692/free-photo-image-summer-landscape-lakeFree Image from public domain licenseA tall mountain summit illuminated by the setting sun on the other side of the ridge. Original public domain image from… https://www.rawpixel.com/image/3285874/free-photo-image-nature-cc0-snowFree Image from public domain licenseBeautiful Autumn forest background. Free public domain CC0 photo. https://www.rawpixel.com/image/6041142/photo-image-background-aesthetic-public-domainFree Image from public domain licenseSunset over mountain. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3283707/free-photo-image-sunrise-grass-fieldFree Image from public domain licenseEmpty pool in a jungle. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286761/free-photo-image-swimming-tropical-forest-natureFree Image from public domain licenseYosemite Falls in Yosemite National Park, USA https://www.rawpixel.com/image/429769/waterfall-natureView licenseMoonrise over Sitka Ranger District, Tongass National Forest, Alaska. Original public domain image from Flickr https://www.rawpixel.com/image/3388283/free-photo-image-moon-mountain-forestFree Image from public domain licenseA woman with long hair in a red dress stands at the entrance of a snowy forest. Original public domain image from Wikimedia… https://www.rawpixel.com/image/3284619/free-photo-image-dress-woman-forestFree Image from public domain licenseA woman walking her dog in a snowy spruce forest in Boží Dar. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3284711/free-photo-image-dog-walk-love-nature-and-animalsFree Image from public domain licenseTiger stripe, animal print background. Free public domain CC0 photo. https://www.rawpixel.com/image/6030803/photo-image-background-public-domain-patternFree Image from public domain licenseOne adult and one baby giraffe walking in the Masai Mara Game Reserve Savanna. Original public domain image from Wikimedia… https://www.rawpixel.com/image/3305667/free-photo-image-animals-kids-game-animalFree Image from public domain licenseAbineau Trail No. 127Fall color September 25, 2016 along Abineau Trail https://www.rawpixel.com/image/3394095/free-photo-image-tree-spring-autumn-forestFree Image from public domain licenseInfinity pool at Haiku, Hawaii, United States. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3285748/free-photo-image-vacation-summer-poolFree Image from public domain licenseAs part of the roadside hazard tree removal project, trees are cleared 150 feet of the road in the Reservoir Lake/Lemhi… https://www.rawpixel.com/image/3259531/free-photo-image-deforestation-forest-treeFree Image from public domain licenseBull elk, Blacktail Deer Plateau. Original public domain image from Flickr https://www.rawpixel.com/image/4032721/photo-image-background-nature-mountainFree Image from public domain licenseScenic view of mountains and lake https://www.rawpixel.com/image/71090/mongolian-landscapeView licenseWorm's eye view of black rock. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3285823/free-photo-image-universe-space-rockFree Image from public domain licenseReaching to the green. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3284803/free-photo-image-people-forest-hand-reach-rainbowFree Image from public domain licenseA morning river scene in the Davidson River Campground, Pisgah National Forest, NC, July 29, 2017. (USDA Photo by Lance… https://www.rawpixel.com/image/3259490/free-photo-image-river-waterfall-natureFree Image from public domain licenseWoman looking at the mountain peaks in Yosemite Valley, USA https://www.rawpixel.com/image/437292/woman-adventureView licenseBackpack backpacking outdoors travel https://www.rawpixel.com/image/11990731/photo-image-cloud-plant-personView licenseA granite cliff in Yosemite under a starry night sky. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3285682/free-photo-image-mountain-nature-night-skyFree Image from public domain licenseThe Mobius Arch Loop Trailhead, United States. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3285654/free-photo-image-universe-astronomy-countrysideFree Image from public domain licenseMilky Way reflections on a beaver pond. Original public domain image from Flickr https://www.rawpixel.com/image/4032678/photo-image-background-tree-starsFree Image from public domain license