Lion 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 licenseThe Natural Bridge From Above. Yellowstone National Park. by Frank Jay Haynes https://www.rawpixel.com/image/14293667/the-natural-bridge-from-above-yellowstone-national-park-frank-jay-haynesFree Image from public domain licenseBlue penstemon (Penstemon cyaneus) by Diane Renkin. Original public domain image from Flickr https://www.rawpixel.com/image/4038683/photo-image-flower-plant-birdFree Image from public domain licenseCollared pronghorn and fawn on Specimen Ridge by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038039/photo-image-animal-public-domainFree Image from public domain licenseBumblebee collecting pollenby Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038621/photo-image-flower-plant-beeFree Image from public domain licenseRoad closure at Fishing Bridge Junction by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038503/photo-image-tree-plant-natureFree Image from public domain licenseSteam phase of Steamboat Geyser, Norris Geyser Basin by Jim Peaco. Original public domain image from Flickr https://www.rawpixel.com/image/4039145/photo-image-tree-plant-smokeFree Image from public domain licenseMt. Hood Pussypaws - Cistanthe umbellata by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038455/photo-image-flower-plant-summerFree Image from public domain licenseCross-country ski tracks at the top of Snow Pass by Diane Renkin. Original public domain image from Flickr https://www.rawpixel.com/image/4038776/photo-image-tree-plant-personFree Image from public domain licenseGrizzly bear on a trail by Jim Peaco. Original public domain image from Flickr https://www.rawpixel.com/image/4038043/photo-image-animal-public-domainFree Image from public domain licenseGrand Canon of the Yellowstone and Great Falls. by William H Rau https://www.rawpixel.com/image/14297645/grand-canon-the-yellowstone-and-great-falls-william-rauFree Image from public domain licenseLower Falls of the Yellowstone, 350 Feet. by William Henry Jackson https://www.rawpixel.com/image/14293488/lower-falls-the-yellowstone-350-feet-william-henry-jacksonFree Image from public domain licenseLedge Spring outflow channelsby Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038400/photo-image-tree-plant-natureFree Image from public domain licenseWood's Rose - Rosa woodsii by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038416/photo-image-flower-plant-roseFree Image from public domain licenseAmerican avocets flying above Floating Island Lake by Jim Peaco. Original public domain image from Flickr https://www.rawpixel.com/image/4039179/photo-image-bird-animalFree Image from public domain licenseWhite Bog Orchid - Platanthera dilatata by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038560/photo-image-flower-plant-summerFree Image from public domain licenseFemale mountain bluebird with food for her young in her mouth by Diane Renkin. Original public domain image from Flickr https://www.rawpixel.com/image/4038722/photo-image-bird-animalFree Image from public domain licenseCut-leaved anemone - Anemone multifida by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038362/photo-image-flower-plant-purpleFree Image from public domain licenseBlack-billed magpie at Mammoth Hot Springs by Diane Renkin. Original public domain image from Flickr https://www.rawpixel.com/image/4037987/photo-image-bird-animalFree Image from public domain licenseCinnamon and blue-winged teals on the Yellowstone River by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038074/photo-image-bird-animalFree Image from public domain license[Untitled photo, possibly related to: Yellowstone River, Glendive, Montana]. Sourced from the Library of Congress. https://www.rawpixel.com/image/12314699/image-cloud-sky-beachFree Image from public domain licenseGrizzly bear on a buried bison carcass at Blacktail Pond by Jim Peaco. Original public domain image from Flickr https://www.rawpixel.com/image/4038777/photo-image-animal-public-domainFree Image from public domain licenseAndrena milwaukeensis, F, Side, Hancock co., Brooklin_2014-01-06-14.48.32 ZS PMaxAndrena milwaukeensis, the Milwaukee… https://www.rawpixel.com/image/4038287/photo-image-bee-birdFree Image from public domain licenseTaking in the views of ice formations by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4225991/photo-image-public-domain-nature-personFree Image from public domain licenseTrumpeter swans flying over a pond at sunrise by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038693/photo-image-plant-bird-natureFree Image from public domain licenseA skier head through a snowy forest along Emigrant Creekby Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038178/photo-image-tree-plant-personFree Image from public domain licenseRoaring Mountain Details by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038615/photo-image-tree-plant-natureFree Image from public domain licenseSeep monkeyflower - Mimulus guttatus by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038563/photo-image-flower-plant-summerFree Image from public domain licenseCinnamon black bear near Mammoth Hot Springs by Neal Herbert. Original public domain image from Flickr https://www.rawpixel.com/image/4038298/photo-image-plant-forestFree Image from public domain licenseSinter formations around Vixen Geyser by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038059/photo-image-nature-landscapeFree Image from public domain licensePelicans in the southeast arm of Yellowstone Lake by Neal Herbert. Original public domain image from Flickr https://www.rawpixel.com/image/4039140/photo-image-tree-plant-birdFree Image from public domain licenseHeliocopter lands at the Mammoth Hot Springs helibaseby Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038368/photo-image-bird-animalFree Image from public domain licenseMotorboat on Yellowstone Lakeby Diane Renkin. Original public domain image from Flickr https://www.rawpixel.com/image/4226120/photo-image-public-domain-tree-plantFree Image from public domain licenseWhite admiral butterfly (Limenitis arthemis arthemis) by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038451/photo-image-tree-plant-butterflyFree Image from public domain licenseBeehive Geyser eruption opening day 2019 by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038394/photo-image-tree-plant-forestFree Image from public domain licensePlowing Beartooth Highway 2021 by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4226062/photo-image-public-domain-personFree Image from public domain licenseTrees downwind of Steamboat Geyser covered in ice by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038163/photo-image-tree-plant-personFree Image from public domain licenseView from Sepulcher Mountain summit by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038554/photo-image-clouds-tree-plantFree Image from public domain licenseCamp in the Forest of the Yellowstone. by William Henry Jackson https://www.rawpixel.com/image/14293619/camp-the-forest-the-yellowstone-william-henry-jacksonFree Image from public domain licenseGardner Falls - Gardner River. Yellowstone National Park. by Frank Jay Haynes https://www.rawpixel.com/image/14293189/gardner-falls-gardner-river-yellowstone-national-park-frank-jay-haynesFree Image from public domain licenseTwo American kestrels perched in an aspen tree by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038374/photo-image-bird-animalFree Image from public domain licenseCrested Pool in Upper Geyser Basin by Jim Peaco. Original public domain image from Flickr https://www.rawpixel.com/image/4039105/photo-image-nature-mountain-waterFree Image from public domain licenseMannoth [sic] Hot Springs, Yellowstone National Park. by Benjamin West Kilburn https://www.rawpixel.com/image/14294676/mannoth-sic-hot-springs-yellowstone-national-park-benjamin-west-kilburnFree Image from public domain licenseMorning preparations and repairs near West Thumb by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4226004/photo-image-public-domain-person-landscapeFree Image from public domain licenseSparrow fledgeling in a sagebrush by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038330/photo-image-tree-plant-babyFree Image from public domain licenseFledged great horned owl chick walking out on a limb by Jacob W. Frank. Original public domain image from Flickr https://www.rawpixel.com/image/4038042/photo-image-bird-animalFree Image from public domain licenseSwan on the Madison RiverTrumpeter swan on the Madison River by Neal Herbert. Original public domain image from Flickr https://www.rawpixel.com/image/4039192/photo-image-bird-nature-waterFree Image from public domain licenseIrrigated sugar beet fields along Yellowstone River. Note grasshopper damage. Rosebud County, Montana. Sourced from the… https://www.rawpixel.com/image/12273874/photo-image-cow-plant-personFree Image from public domain license