Zandsteenbrug Pravcická Brána in Boheems Zwitserland (1881 - 1910) by anonymous https://www.rawpixel.com/image/13758549/zandsteenbrug-pravcicka-brana-boheems-zwitserland-1881-1910-anonymousFree Image from public domain license"Vulcan's cave" at the entrance to the Solfatara, near Naples: jets of steam emerging from the rock floor, watched by… https://www.rawpixel.com/image/14020216/image-paper-horse-cartoonFree Image from public domain licenseMiner breaking coal off the face. Old Ben number eight. West Frankfort, Illinois (see 26980-D). Sourced from the Library of… https://www.rawpixel.com/image/12324208/image-face-person-forestFree Image from public domain licenseView near Jackson, Ky. on a frosty morning. "Post Office Rock." by Henry M Sutton https://www.rawpixel.com/image/14303434/image-face-person-public-domainFree Image from public domain licenseThe Pictured Rocks. "Wreck Cliff" and Cascade. by Christian B Brubaker https://www.rawpixel.com/image/14288490/the-pictured-rocks-wreck-cliff-and-cascade-christian-brubakerFree Image from public domain license[Untitled photo, possibly related to: Erosion control on Natchez Trace Project near Lexington, Tennessee]. Sourced from the… https://www.rawpixel.com/image/12309084/image-plant-person-public-domainFree Image from public domain licenseWatson Lake. At Granite Dells near Prescott, Arizona. by Ejmer Ostlund https://www.rawpixel.com/image/14301998/watson-lake-granite-dells-near-prescott-arizona-ejmer-ostlundFree Image from public domain licenseSmallpox epidemic, Palestine. Photograph album, ca. 1922. https://www.rawpixel.com/image/13976813/smallpox-epidemic-palestine-photograph-album-ca-1922Free Image from public domain licenseMarine rock texture background https://www.rawpixel.com/image/2264609/free-photo-image-abstract-backdrop-background-photosView licenseSkylight Cave in the Navy Yard, No. 255 from the series "In and About the Dells of the Wisconsin River" by Henry Hamilton… https://www.rawpixel.com/image/8965172/photo-image-person-art-oceanFree Image from public domain licenseCavern in St Catherine's Island, Tenby by John Wheeley Gough Gutch https://www.rawpixel.com/image/14312931/cavern-catherines-island-tenby-john-wheeley-gough-gutchFree Image from public domain licenseBeige rock textured surface background https://www.rawpixel.com/image/2309665/free-photo-image-backdrop-background-photos-textureView licenseCave Road, Sumner, Christchurch (1920s-1930s) by Roland Searle. https://www.rawpixel.com/image/13028848/cave-road-sumner-christchurch-1920s-1930s-roland-searleFree Image from public domain licenseVia Mala, Graubünden (Grisons), Switzerland. Photograph by A. Braun, 18--. https://www.rawpixel.com/image/13972261/via-mala-graubunden-grisons-switzerland-photograph-braun-18Free Image from public domain licenseCreede, Colorado. Lead and silver mining in a former "ghost town". Sourced from the Library of Congress. https://www.rawpixel.com/image/12339112/image-person-public-domain-womanFree Image from public domain licenseRocky Point, near Spouting Cave. Newport, R.I. by John P Soule https://www.rawpixel.com/image/14300917/rocky-point-near-spouting-cave-newport-ri-john-souleFree Image from public domain licenseA view of a boat on sea through an opening in an arched rock formation. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3294160/free-photo-image-boat-cave-cc0Free Image from public domain licenseView of rocks and shore, possibly at Salem, Massachusetts by Perkins and Lefavour https://www.rawpixel.com/image/14298239/photo-image-ocean-sea-waterFree Image from public domain licenseInterieur van grot Santa Maria Capella (1778) by Louis Ducros https://www.rawpixel.com/image/13788171/interieur-van-grot-santa-maria-capella-1778-louis-ducrosFree Image from public domain licensePeep O'Day [Grand Canyon of the Arkansas] by Joseph Collier https://www.rawpixel.com/image/14290102/peep-oday-grand-canyon-the-arkansas-joseph-collierFree Image from public domain licenseMountain families in Kentucky "raise" their own coal in the backyard along roadsides. Up Morris Fork of Kentucky River.… https://www.rawpixel.com/image/12243495/photo-image-plant-tree-mountainFree Image from public domain license"Rock of Ages" and Whirlwind Bridge - Cave of the Winds [Niagara Falls] by George E Curtis https://www.rawpixel.com/image/14291051/photo-image-person-public-domain-natureFree Image from public domain licenseOld abandoned coke ovens. Maitland, West Virginia. Sourced from the Library of Congress. https://www.rawpixel.com/image/12324373/image-plant-tree-public-domainFree Image from public domain licenseThe Basin, White Mountains, New Hampshire, U.S. by William England https://www.rawpixel.com/image/14290378/the-basin-white-mountains-new-hampshire-us-william-englandFree Image from public domain licenseClose up of exposure of Otaki sandstone a few yards east .... (24 November 1960) by Leslie Adkin. https://www.rawpixel.com/image/13030490/image-people-circle-sandFree Image from public domain licenseView of rocks and shore, possibly at Salem, Massachusetts by Perkins and Lefavour https://www.rawpixel.com/image/14297127/photo-image-ocean-sea-waterFree Image from public domain licenseThe Plague Expedition to Anzob in Russian Turkestan. Photograph album by A.M. Levin, 1899. https://www.rawpixel.com/image/13990697/photo-image-dog-cow-personFree Image from public domain licenseOcean rocks viewed from a coastline cliff at Pfeiffer State Beach. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3289435/free-photo-image-adventure-big-sur-caveFree Image from public domain licenseTerminal Cave of the Unter Grindelwald Glacier by Ernest H Edwards https://www.rawpixel.com/image/14321150/terminal-cave-the-unter-grindelwald-glacier-ernest-edwardsFree Image from public domain licenseGeorges du Trient, kloof, bergbeek Trient, Zwitserland (c. 1890 - c. 1925) by Jean Henri Jullien https://www.rawpixel.com/image/13752550/photo-image-paper-person-waterFree Image from public domain licenseThe Plague Expedition to Anzob in Russian Turkestan. Photograph album by A.M. Levin, 1899. https://www.rawpixel.com/image/13972631/photo-image-horse-person-mountainFree Image from public domain licenseThe Chasm of the Au Sable River, N.Y. No. 2. The Chasm of the Au Sable from Table Rock, looking down-stream. The rock here… https://www.rawpixel.com/image/14297168/photo-image-art-collage-waterFree Image from public domain licenseHalf ontklede man in het bos (1847 - c. 1863) by Willem Jacob Hofdijk, Willem Jacob Hofdijk, Koninklijke Nederlandse… https://www.rawpixel.com/image/13764363/image-paper-face-frameFree Image from public domain licenseThe cave of Trophonius in Livadeia, Greece; the cavities in the rock are for votive offerings. Etching by Elizabeth Byrne… https://www.rawpixel.com/image/14000711/image-cartoon-person-artFree Image from public domain licenseA deserted beach, turquoise sea and rocky cliffs form a surfer's paradise at Marin Headlands. Original public domain image… https://www.rawpixel.com/image/3289560/free-photo-image-beach-images-pictures-blue-water-caveFree Image from public domain licenseKillarney. Caves under the "Colleen Bawn" Rock, Middle Lake. https://www.rawpixel.com/image/14304759/killarney-caves-under-the-colleen-bawn-rock-middle-lakeFree Image from public domain licenseElfin Gorge, - looking down, Watkins Glen, N.Y. by James Douglas Hope https://www.rawpixel.com/image/14293463/elfin-gorge-looking-down-watkins-glen-ny-james-douglas-hopeFree Image from public domain licenseThe Plague Expedition to Anzob in Russian Turkestan. Photograph album by A.M. Levin, 1899. https://www.rawpixel.com/image/14013502/image-dog-paper-frameFree Image from public domain licenseFiguren in de rotskapel van Sant'Angelo Fasanella (1843) by Achille Vianelli https://www.rawpixel.com/image/13792131/figuren-rotskapel-van-santangelo-fasanella-1843-achille-vianelliFree Image from public domain licenseAerial View of the Maze, a Remote and Almost Inaccessible Region in the Heart of the Canyonlands, 05/1972. Original public… https://www.rawpixel.com/image/8803358/photo-image-art-mountain-paintingFree Image from public domain licenseBetween the Yosemite Falls, Yosemite Valley, Mariposa County, Cal. (#14) by Carleton Watkins https://www.rawpixel.com/image/14311500/image-public-domain-nature-united-statesFree Image from public domain licenseHupeh province, China. Photograph, 1981, from a negative by John Thomson, ca. 1870. https://www.rawpixel.com/image/14015517/photo-image-person-public-domain-natureFree Image from public domain licenseRoute de Simplon. Tunnel dans la gorge de Gondo. by Adolphe Braun https://www.rawpixel.com/image/14289616/route-simplon-tunnel-dans-gorge-gondo-adolphe-braunFree Image from public domain licenseYuenfu, River Min, Fukien province, China. Photograph, 1981, from a negative by John Thomson, 1870/1871. https://www.rawpixel.com/image/14019686/photo-image-public-domain-nature-trainFree Image from public domain licenseView of cliffs in Portugal https://www.rawpixel.com/image/462045/premium-photo-image-sea-cliffs-coastView licenseThe Plague Expedition to Anzob in Russian Turkestan. Photograph album by A.M. Levin, 1899. https://www.rawpixel.com/image/13998127/photo-image-plant-tree-artFree Image from public domain licenseAncestral Puebloan Granary(NPS photo by Neal Herbert). Original public domain image from Flickr https://www.rawpixel.com/image/4033472/photo-image-nature-buildingFree Image from public domain licenseBeige rock textured surface background https://www.rawpixel.com/image/2264357/free-photo-image-abstract-backdrop-background-photosView licenseBeige rock textured surface background https://www.rawpixel.com/image/2309829/free-photo-image-backdrop-background-photos-textureView licenseTwee mannen en een paard-en-wagen op een strand met kliffen (1883) by anonymous https://www.rawpixel.com/image/13760514/twee-mannen-een-paard-en-wagen-een-strand-met-kliffen-1883-anonymousFree Image from public domain licenseBeige rock textured surface background https://www.rawpixel.com/image/2309684/free-photo-image-sandstone-backdrop-background-photosView licenseSugarloaf Islands at Fisherman's Bay, Farallon Islands by Carleton Watkins https://www.rawpixel.com/image/14275461/sugarloaf-islands-fishermans-bay-farallon-islands-carleton-watkinsFree Image from public domain licenseArch at Deer Creek. [Platte Canyon, Colorado] by Joseph Collier https://www.rawpixel.com/image/14289151/arch-deer-creek-platte-canyon-colorado-joseph-collierFree Image from public domain licenseThe Pictured Rocks. Wreck Cliff and Cascade. by Christian B Brubaker https://www.rawpixel.com/image/14287789/the-pictured-rocks-wreck-cliff-and-cascade-christian-brubakerFree Image from public domain license"Wendigoes Wawbeck," (Giants Arch.) [Marquette, Michigan] by Brainard F Childs https://www.rawpixel.com/image/14289948/wendigoes-wawbeck-giants-arch-marquette-michigan-brainard-childsFree Image from public domain licenseLuna Fall & Cave of the Winds. [Niagara Falls, New York] by George E Curtis https://www.rawpixel.com/image/14289406/luna-fall-cave-the-winds-niagara-falls-new-york-george-curtisFree Image from public domain licenseTerminal Cave of the Unter Grindelwald Glacier by Ernest H Edwards https://www.rawpixel.com/image/14316334/terminal-cave-the-unter-grindelwald-glacier-ernest-edwardsFree Image from public domain license