Old Faithful erupts on a summer morning. Original public domain image from Flickr https://www.rawpixel.com/image/4032595/photo-image-background-summer-natureFree 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 licenseRainbow over the Gardner River Canyon near Mammoth. Original public domain image from Flickr https://www.rawpixel.com/image/4032706/photo-image-background-tree-rainbowFree Image from public domain licenseMilky way over Silex Spring runoff. Original public domain image from Flickr https://www.rawpixel.com/image/4032634/photo-image-background-stars-woodsFree Image from public domain licenseHelicopter crews haul rocks for Mt. Washburn Trail rehabilitation by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4225744/photo-image-public-domain-summer-airplaneFree Image from public domain licenseBull bison with a runny nose walks in the road near Midway Geyser Basin. Original public domain image from Flickr https://www.rawpixel.com/image/4032607/photo-image-background-natureFree Image from public domain licenseTree covered in rime ice near Mud Volcano. Original public domain image from Flickr https://www.rawpixel.com/image/4032586/photo-image-background-tree-natureFree Image from public domain licenseSunshine through a tree near Artemisia Geyser. Original public domain image from Flickr https://www.rawpixel.com/image/4032642/photo-image-background-light-treeFree Image from public domain licenseHoar frost on grass in Lamar Valley. Original public domain image from Flickr https://www.rawpixel.com/image/4032652/photo-image-background-nature-grassFree Image from public domain licenseRime ice covers a tree near Mud Volcano. Original public domain image from Flickr https://www.rawpixel.com/image/4032677/photo-image-background-tree-natureFree Image from public domain licenseBear claw marks on a tree near Lone Star Geyser. Original public domain image from Flickr https://www.rawpixel.com/image/4032769/photo-image-background-tree-handFree Image from public domain licenseVisitor photographing a coyote fishing in Madison River, USA. Original public domain image from Flickr https://www.rawpixel.com/image/4032782/photo-image-background-person-natureFree Image from public domain licenseFrosty bull bison in the road near Fishing Bridge. Original public domain image from Flickr https://www.rawpixel.com/image/4032550/photo-image-background-nature-fallFree Image from public domain licenseParhelion and diamond dust above the trees. Original public domain image from Flickr https://www.rawpixel.com/image/4032696/photo-image-background-light-treeFree Image from public domain licenseMilky Way & meteor, Yellowstone Lake. Original public domain image from Flickr https://www.rawpixel.com/image/4039434/photo-image-background-tree-starFree Image from public domain licenseGreat horned owlets, Mammoth Hot Springs, USA. Original public domain image from Flickr https://www.rawpixel.com/image/4039433/photo-image-background-tree-leafFree Image from public domain licenseYellowbells - Fritillaria pudica by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4039042/photo-image-flower-plant-leafFree Image from public domain licenseColumbian monkshood (Ranunculaceae: Aconitum columbianum) along the trail to Wolf Lake https://www.rawpixel.com/image/4039827/photo-image-flower-plant-beeFree Image from public domain licenseElk Thistle - Cirsium scariousumby Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038543/photo-image-flower-plant-purpleFree Image from public domain licenseSunrise over Lamar River (wide portrait) by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038752/photo-image-tree-art-plantFree Image from public domain licenseLower Falls high flow from Artist Point by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038870/photo-image-tree-art-plantFree Image from public domain licenseLone tree in the fog at Lower Geyser Basin by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038894/photo-image-trees-nature-iceFree Image from public domain licenseGrand Prismatic Spring Overlook on a clear day by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4039037/photo-image-nature-mountain-waterFree Image from public domain licenseWild Chives - Allium schoenoprasumby Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038990/photo-image-flower-plantFree Image from public domain licenseSugarbowls - Clematis hirsutissimaby Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4039041/photo-image-flower-plant-birdFree Image from public domain licensePrairie Smoke - Geum triflorumby Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038999/photo-image-flower-plant-natureFree Image from public domain licensePale Agoseris - Agoseris glaucaby Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038997/photo-image-flower-plantFree Image from public domain licenseGlacier Lily - Erythronium grandiflorum by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4039038/photo-image-flower-plant-lilyFree Image from public domain licenseSunrise steam rises into the air at Steamboat Geyser by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4039030/photo-image-tree-plant-fireFree Image from public domain licenseMountain Deathcamas - Zigadenus elegans by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4039044/photo-image-flower-plantFree Image from public domain licenseWestern coneflower pollinators by Neal Herbert. Original public domain image from Flickr https://www.rawpixel.com/image/4039132/photo-image-plant-beeFree Image from public domain licenseBadger tracks on Swan Lake Flat. Diane Renkin. Original public domain image from Flickr https://www.rawpixel.com/image/4039095/photo-image-public-domain-winterFree Image from public domain licenseLower Falls with rainbow taken from Artist Point by Diane Renkin. Original public domain image from Flickr https://www.rawpixel.com/image/4039097/photo-image-tree-plant-natureFree Image from public domain licenseA large bull bison in Mammoth Hot Springs by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038049/photo-image-animal-public-domainFree Image from public domain licenseBull bison walks in the snowy road near Midway Geyser Basin. Original public domain image from Flickr https://www.rawpixel.com/image/4038176/photo-image-dog-animalFree Image from public domain licenseSticky Jacob's Ladder - Polemonium viscosum by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038439/photo-image-flower-plant-summerFree Image from public domain licenseNuttall's larkspur - Delphinium nuttallianum by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038386/photo-image-flower-plantFree Image from public domain licenseRosy Paintbrush - Castilleja rhexifolia by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038446/photo-image-flower-plant-beeFree Image from public domain licenseAlpine Lousewort - Pedicularis scopulorum by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038414/photo-image-flower-plant-beeFree Image from public domain licensePrairie Smoke (Geum triflorum) by Neal Herbert. Original public domain image from Flickr https://www.rawpixel.com/image/4038716/photo-image-flower-plant-beeFree Image from public domain licenseStonecrop - Sedum lanceolatumby Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038458/photo-image-flower-plant-beeFree Image from public domain licenseA bison crosses the Firehole River at sunset by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038513/photo-image-nature-mountain-waterFree Image from public domain licenseYellow Salsify - Tragopogon dubiusby Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038431/photo-image-flower-plantFree Image from public domain licenseSunset beam in Lamar Valley by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038421/photo-image-tree-plant-personFree Image from public domain licenseJacobs-ladder - Polemonium pulcherrimum with a velvet mite (Balaustium sp.) by Jacob W. FrankMeet Yellowstone’s… https://www.rawpixel.com/image/4038235/photo-image-flower-plant-summerFree Image from public domain licenseLone bison near Pebble Creek by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038633/photo-image-tree-plant-dogFree Image from public domain licenseAutumn Dwarf Gentian - Gentianella amarella by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038440/photo-image-flower-plant-purpleFree Image from public domain licenseAmerican Bistort - Bistorta bistortoides by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038593/photo-image-flower-plant-beeFree Image from public domain licenseDiamond-leaved saxifrage - Micranthes rhomboidea by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038372/photo-image-flower-plant-beeFree Image from public domain licenseSun dog over the Grand Canyon of the Yellowstone (portrait) by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038215/photo-image-light-tree-plantFree Image from public domain licenseCanary Violet - Viola praemorsaby Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038430/photo-image-flower-plantFree Image from public domain licenseLion Geyser and Heart Spring on a sunny afternoon by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038456/photo-image-nature-mountain-waterFree Image from public domain licenseWestern Valerian - Valeriana occidentalis by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038367/photo-image-flower-plantFree Image from public domain licenseLittleflower Penstemon - Penstemon procerus by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038432/photo-image-flower-plant-beeFree Image from public domain licenseSmallflower Woodland-star - Lithophragma parviflorum by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038602/photo-image-flower-plant-beeFree Image from public domain licenseMarsh cinquefoil - Comarum palustre by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038562/photo-image-flower-plant-leafFree Image from public domain licenseRocky Mountain Fringed Gentian - Gentianopsis thermalis by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038460/photo-image-flower-plant-purpleFree Image from public domain licenseWoodland pinedrops - Pterospora andromedea by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038573/photo-image-flower-plant-summerFree Image from public domain licenseWyoming Kittentails - Besseya wyomingensis by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038546/photo-image-flower-plant-summerFree Image from public domain licenseSagebrush bluebells - Mertensia oblongifolia by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038369/photo-image-flower-plant-birdFree Image from public domain licenseSpotted Missionbells - Fritillaria atropurpurea by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038457/photo-image-flower-plant-beeFree Image from public domain licenseYellow toadflax (Linaria vulgaris) - invasive species by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038596/photo-image-flower-plant-beeFree Image from public domain licenseGrand Geyser eruption (portrait) by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038302/photo-image-tree-plant-forestFree Image from public domain licenseGreen-flowered wintergreen - Pyrola chlorantha by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038566/photo-image-flower-plant-summerFree Image from public domain license