Above, a lion standing roaring in a mountainous landscape, below, the lion's track. Etching by J. E. Ridinger. https://www.rawpixel.com/image/13957660/image-dog-lion-paperFree Image from public domain licenseTreinspoor nabij Mürren (1870 - 1930) by anonymous and anonymous https://www.rawpixel.com/image/13734015/treinspoor-nabij-murren-1870-1930-anonymous-and-anonymousFree Image from public domain licenseCalifornia Limited crossing Johnson's Canyon, Arizona (c. 1928) by anonymous https://www.rawpixel.com/image/13735050/california-limited-crossing-johnsons-canyon-arizona-c-1928-anonymousFree Image from public domain licenseThe California Limited in Crozier Canyon, Arizona (c. 1928) by anonymous https://www.rawpixel.com/image/13735039/the-california-limited-crozier-canyon-arizona-c-1928-anonymousFree Image from public domain licenseSweet Sake House at the Foot of Mt. Hakone, 6:00 p.m. on a Spring Day by Kobayashi Kiyochika https://www.rawpixel.com/image/11931685/image-cow-plant-personFree Image from public domain licenseShasta route through the Shasta-Cascade wonderland region Southern Pacific (1950), vintage illustration by Maurice Logan.… https://www.rawpixel.com/image/11064482/image-plant-person-artFree Image from public domain licenseGotthardbahn: Gesammt-Uebersicht der Bahnentwickelung [sic] in der Biaschina by Adolphe Braun and Cie https://www.rawpixel.com/image/14316151/image-art-mountain-roadsFree Image from public domain licenseGotthardbahn: Bahngebiet bei Goldau mit dem Rigi by Adolphe Braun and Cie https://www.rawpixel.com/image/14315689/gotthardbahn-bahngebiet-bei-goldau-mit-dem-rigi-adolphe-braun-and-cieFree Image from public domain licenseEntrance to Doone Valley by Charles L Mitchell M D and A W Elson and Co https://www.rawpixel.com/image/14325065/entrance-doone-valley-charles-mitchell-and-elson-andFree Image from public domain licenseThe Doone Track by Charles L Mitchell M D and A W Elson and Co https://www.rawpixel.com/image/14324891/the-doone-track-charles-mitchell-and-elson-andFree Image from public domain licenseClear Creek Cañon, Colorado Central Railroad by Joseph Collier https://www.rawpixel.com/image/14320018/clear-creek-canon-colorado-central-railroad-joseph-collierFree Image from public domain licenseClear Creek Cañon, Colorado Central Railroad by Joseph Collier https://www.rawpixel.com/image/14319078/clear-creek-canon-colorado-central-railroad-joseph-collierFree Image from public domain licenseMeeting of the Shenandoah and Potomac, at Harper's Ferry by James Gardner and Alexander Gardner https://www.rawpixel.com/image/14324619/image-crosses-art-mountainFree Image from public domain licenseClear Creek Cañon, Colorado Central Railroad by Joseph Collier https://www.rawpixel.com/image/14318833/clear-creek-canon-colorado-central-railroad-joseph-collierFree Image from public domain licenseClear Creek Cañon, Colorado Central Railroad by Joseph Collier https://www.rawpixel.com/image/14318916/clear-creek-canon-colorado-central-railroad-joseph-collierFree Image from public domain licenseClear Creek Cañon, Colorado Central Railroad by Joseph Collier https://www.rawpixel.com/image/14319160/clear-creek-canon-colorado-central-railroad-joseph-collierFree Image from public domain licenseMountain Pass with Railroad Tracks by William Henry Jackson https://www.rawpixel.com/image/14283800/mountain-pass-with-railroad-tracks-william-henry-jacksonFree Image from public domain licenseWeber Cañon, Union Pacific Railroad by William Henry Jackson https://www.rawpixel.com/image/14280602/weber-canon-union-pacific-railroad-william-henry-jacksonFree Image from public domain licenseMt. Washington Rail Road, White Mountain's by John Coates Browne https://www.rawpixel.com/image/14280516/mt-washington-rail-road-white-mountains-john-coates-browneFree Image from public domain licenseAlicante. Primer arco de triunfo de la provincia, en Villena by Charles Clifford https://www.rawpixel.com/image/14277813/image-mountain-public-domain-fencesFree Image from public domain licenseLooking Down Echo Canyon from Old Mormon Fortifications by A J Russell https://www.rawpixel.com/image/14275646/looking-down-echo-canyon-from-old-mormon-fortifications-russellFree Image from public domain licenseAbove, a fox standing on a mountain craig staring into a tree-top in pursuit of prey, below, the fox's tracks. Etching by J.… https://www.rawpixel.com/image/14021053/image-paper-cat-cartoonFree Image from public domain licenseAbove, a lynx standing in front of a large rock in a mountainous landscape, below, its track. Etching by J. E. Ridinger. https://www.rawpixel.com/image/14011755/image-cat-art-mountainFree Image from public domain licenseAbove, a chamois leaping in front of a rock in a mountainous landscape, below, its tracks in soft and hard soil. Etching by… https://www.rawpixel.com/image/14005275/image-cartoon-person-artFree Image from public domain licenseGreat Western Railway: east end of the tunnel at Fox's Wood, Bristol. Tinted lithograph by J.C. Bourne, 1846. https://www.rawpixel.com/image/14004718/image-person-art-mountainFree Image from public domain licenseLondon and Birmingham Railway: the railway track cut through rock at Blisworth, Northamptonshire, with a viaduct built to… https://www.rawpixel.com/image/13992627/image-person-cross-artFree Image from public domain licenseMatlock Bath, Derbyshire: from the Old Bath Terrace. Aquatint by H. Moore, 1831, after himself. https://www.rawpixel.com/image/13990348/image-horse-plant-personFree Image from public domain licenseSt. Gothard Hospital, St. Gothard, Switzerland: panoramic view. Aquatint after F.X. Triver. https://www.rawpixel.com/image/13989787/image-cloud-person-artFree Image from public domain licenseAbove, an ibex climbing on crags in the mountains, below, its tracks. Etching by J.E. Ridinger. https://www.rawpixel.com/image/13978478/image-cartoon-art-mountainsFree Image from public domain licenseLa Corniche near Monaco (1884) by Claude Monet. Original from the Rijksmuseum. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/547239/monet-landscape-painting-wall-artFree Image from public domain license