Illustrated in this artist's concept are two possible structures for asteroid 2011 MD. Original from NASA. Digitally… https://www.rawpixel.com/image/440668/free-photo-image-asteroid-nasa-galaxy Free Image from public domain license
The Repository of Arts, Literature, Commerce, Manufactures, Fashions, and Politics, 1st series, vol. 1 https://www.rawpixel.com/image/9330512/image-paper-arts-collage Free Image from public domain license
Above Hoover Dam near Boulder City, Nevada. Original image from Carol M. Highsmith’s America, Library of Congress… https://www.rawpixel.com/image/421829/free-photo-image-colorado-hydroelectric-dam Free Image from public domain license
Large stepped mountains with boulders, pines, and waterfall at back; small open pavilion on flat topped rock just below… https://www.rawpixel.com/image/7637293/image-art-vintage-public-domain Free Image from public domain license
Snowdon, after an April Hailstorm [or Snowdon through Clearing Clouds] by Alfred William Hunt https://www.rawpixel.com/image/9613860/image-bible-painting-art-dark Free Image from public domain license
Large rock formation with two tall pine trees at lower center with an elderly couple enjoying tea on boulder; in middle… https://www.rawpixel.com/image/7637162/image-background-moon-art Free Image from public domain license
plant-covered boulders in foreground, a large branch or tree has broken off and lays atop the boulders with brown dying… https://www.rawpixel.com/image/7651588/image-background-plant-leaves Free Image from public domain license
Large boulder on side of hill; bamboo springing from lower segment of boulder; larger, grey stalk of bamboo with light… https://www.rawpixel.com/image/7637191/image-art-light-vintage Free Image from public domain license
Sun shining on Snow at Boulder Ridge, Mt Baker Snoqualmie National Forest. Original public domain image from Flickr https://www.rawpixel.com/image/4075289/photo-image-light-tree-plant Free Image from public domain license
"Rescue of Bizhan by Piran", Folio from a Shahnama (Book of Kings) of Firdausi https://www.rawpixel.com/image/9330329/photo-image-paper-art-watercolors Free Image from public domain license
From Tegner's Drapa Longfellow's translation "sinking beneath the waves" boulder returned no more https://www.rawpixel.com/image/7690817/image-art-vintage-public-domain Free Image from public domain license
One of a pair of landscapes; once grouped with white-robed Kannon that was placed in center; left landscape; rocky cliff at… https://www.rawpixel.com/image/7637223/image-background-art-vintage Free Image from public domain license
A stream in a forest, with vines hanging down from tree branches. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3300527/free-photo-image-jungle-best-stone-pictures-images-bog Free Image from public domain license
Grotto of Sarrazine near Nans-sous-Sainte-Anne by Gustave Courbet https://www.rawpixel.com/image/14262942/grotto-sarrazine-near-nans-sous-sainte-anne-gustave-courbet Free Image from public domain license
U.S. Air Force Master Sgt. Robert Lilly, a joint tactical air controller with the 57th Operations Group, pays tribute to a… https://www.rawpixel.com/image/3319065/free-photo-image-memorial-day-american-flag-afb Free Image from public domain license
First Solar, a NREL research partner has installed a small PV array used as part of Energy Systems Integration research… https://www.rawpixel.com/image/3322503/free-photo-image-solar-panels-boulder-bridge Free Image from public domain license
Dungeness River, Olympic National Forest. Forest Service Photo by Alex Weinmann. Original public domain image from Flickr https://www.rawpixel.com/image/4076086/photo-image-nature-water-fish Free Image from public domain license
Fog in Tenerife. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3296991/free-photo-image-desert-best-stone-pictures-images-boulders Free Image from public domain license
V Bar V Summer Solstice 2022The solar calendar was accurate as ever at V Bar V Heritage Site, showcasing the oncoming… https://www.rawpixel.com/image/9653677/photo-image-face-shadow-plant Free Image from public domain license
Lost under the stars. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3303343/free-photo-image-asto-astro-photography-astronomy Free Image from public domain license
Le massif des Météores. Vue prise de Kalambaka by Frédéric Boissonnas https://www.rawpixel.com/image/14258567/massif-des-meteores-vue-prise-kalambaka-frederic-boissonnas Free Image from public domain license
A macro shot of a dirt path in Mount Sanitas Trail in Boulder, Colorado. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3300875/free-photo-image-asphalt-boulder-brown-background Free Image from public domain license
Glacier Peak from Mt Baker, Mt. Baker Snoqualmie National Forest. Original public domain image from Flickr https://www.rawpixel.com/image/4075949/photo-image-nature-mountain-ice Free Image from public domain license
The Limington Rapids on the rocky Saco River, near Limington, Maine, are a family attraction. There's a venerable picnic… https://www.rawpixel.com/image/2372462/photo-image-cloud-plant-tree View license
Ranger Jack O'LanternNPS Photo/ Carmen Aurrecoechea Alt Text: A uniformed ranger wears a pumpkin carved with a jack… https://www.rawpixel.com/image/9654855/photo-image-face-plant-person Free Image from public domain license
Clouds build from Geology Tour RoadNPS Photo/ Carmen Aurrecoechea Alt Text: Large white clouds loom over a desert landscape… https://www.rawpixel.com/image/9655188/photo-image-cloud-sky-trees Free Image from public domain license
Boulder Ridge Glacier at Sunset, Mt Baker Snoqualmie National Forest. Original public domain image from Flickr https://www.rawpixel.com/image/4075854/photo-image-nature-mountain-ice Free Image from public domain license
Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3303673/free-photo-image-abies-best-stone-pictures-images-blue-rocks-family-campground Free Image from public domain license
Ranger Jack O'LanternNPS Photo/ Carmen Aurrecoechea Alt Text: A uniformed ranger wears a pumpkin carved with a jack… https://www.rawpixel.com/image/9654976/image-face-person-public-domain Free Image from public domain license
Ranger Jack O'LanternNPS Photo/ Carmen Aurrecoechea Alt Text: A uniformed ranger wears a pumpkin carved with a jack… https://www.rawpixel.com/image/9654984/image-face-person-public-domain Free Image from public domain license
Traveler sitting at a viewpoint. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3295525/free-photo-image-desert-adventure-africa Free Image from public domain license
Abhimanyu Shatters Boulder Held by Ghatotkacha, Scene from the Story of the Marriage of Abhimanyu and Vatsala, Folio from a… https://www.rawpixel.com/image/12037923/image-background-face-person Free Image from public domain license
Jerry Peak Wilderness, Boulder White Cloud Mountains - Sunset over the East Fork of the Salmon River. Original public domain… https://www.rawpixel.com/image/3390990/free-photo-image-central-abies-boulder-mountains Free Image from public domain license
V Bar V Summer Solstice 2022The solar calendar was accurate as ever at V Bar V Heritage Site, showcasing the oncoming… https://www.rawpixel.com/image/9653514/photo-image-shadow-plant-people Free Image from public domain license
Coves at Hug Point State Recreation Site, a state park south of the seaside town of Cannon Beach on the northern coastline… https://www.rawpixel.com/image/2347508/photo-image-plant-tree-sky View license
Incident Remote Automatic Weather Station. A Incident Remote Automatic Weather Station used on the Boulder 2700 Fire in… https://www.rawpixel.com/image/8742260/photo-image-plant-fire-tree Free Image from public domain license
President Joe Biden's motorcade departs Denver International Airport, Tuesday, September 14, 2021, en route to the National… https://www.rawpixel.com/image/9653281/image-person-public-domain-house Free Image from public domain license
Group portrait of Japanese women and men by Felice Beato and Baron Raimund von Stillfried https://www.rawpixel.com/image/14258402/image-face-hand-person Free Image from public domain license
Ranger Jack O'LanternNPS Photo/ Carmen Aurrecoechea Alt Text: A uniformed ranger wears a pumpkin carved with a jack… https://www.rawpixel.com/image/9655123/photo-image-face-person-balloon Free Image from public domain license
Boulder field near Cap Rock under storm cloudsAlt text: Large boulder fields and Joshua Trees stand illuminated as the sun… https://www.rawpixel.com/image/9654162/photo-image-clouds-trees-public-domain Free Image from public domain license
Sunset at Black Rock CanyonJoshua trees and boulder fields at sunset at Black Rock Canyon NPS Photo/ Carmen Aurrecoechea Alt… https://www.rawpixel.com/image/9655167/photo-image-clouds-sunset-plant Free Image from public domain license
Clouds build from Geology Tour RoadNPS Photo/ Carmen Aurrecoechea Alt Text: Large white clouds loom over a desert landscape… https://www.rawpixel.com/image/9655114/photo-image-clouds-plant-sky Free Image from public domain license
Plymouth Rock. https://www.rawpixel.com/image/2354656/plymouth-rock View license
Chuckwalla in a CreviceEven as the largest lizard in Joshua Tree, the common chuckwalla (Sauromalus ater) is not immune to… https://www.rawpixel.com/image/9654606/photo-image-tree-animal-public-domain Free Image from public domain license
Landschap met wandelaars en zicht op de Aiguille des Grands Charmoz (1859) by Eugène Cicéri, Frédéric Martens, Joseph Rose… https://www.rawpixel.com/image/13738299/image-paper-frame-plant Free Image from public domain license
Mont Blanc: a flat boulder raised on a pinnacle of ice. Colour lithograph by Louis Haghe after J.D. Forbes. https://www.rawpixel.com/image/13952876/image-cloud-person-art Free Image from public domain license
Bighorn Sheep on Ryan MountainNPS / Preston Jordan Jr. It's somewhat rare to stumble upon bighorn sheep within the park, but… https://www.rawpixel.com/image/9654164/photo-image-space-mountain-animal Free Image from public domain license
Ryan Mountain Bighorn SheepNPS / Preston Jordan Jr. A small group of bighorn sheep keeping an eye on the wildlife wandering… https://www.rawpixel.com/image/9653923/photo-image-space-eye-mountain Free Image from public domain license
Boulder Creek FireA firefighter with Engine 8302 from the Bureau of Land Management's Green River District works to contain… https://www.rawpixel.com/image/9653624/image-face-plant-person Free Image from public domain license
Ryan MountainNPS / Preston Jordan Jr. A young bighorn sheep about as unsure of the steep terrain it's on as it is of the… https://www.rawpixel.com/image/9654173/photo-image-space-mountain-animal Free Image from public domain license