A staircase in a tunnel enclosed in a steel net. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3287611/free-photo-image-architecture-asphalt-banisterFree Image from public domain license[Untitled photo, possibly related to: Freight operations on the Indiana Harbor Belt railroad between Chicago, Illinois and… https://www.rawpixel.com/image/12291368/photo-image-sky-smoke-roadFree Image from public domain licenseFlagstaff (vicinity), Arizona. Diesel freight train rounding a curve on the Atchison, Topeka, and Santa Fe Railroad between… https://www.rawpixel.com/image/12292616/photo-image-sky-road-public-domainFree Image from public domain licenseBuchanan, New Mexico. Rounding a long curve approaching the town along the Atchison, Topeka, and Santa Fe Railroad between… https://www.rawpixel.com/image/12292239/photo-image-cloud-plant-skyFree Image from public domain license[Untitled photo, possibly related to: Freight operations on the Indiana Harbor Belt railroad between Chicago, Illinois and… https://www.rawpixel.com/image/12291387/photo-image-sky-road-public-domainFree Image from public domain licensePotato farms in Aroostook County showing the layout of land. The highway curving in the foreground is U.S. 1. See general… https://www.rawpixel.com/image/12275054/photo-image-background-plant-patternFree Image from public domain licenseMap route to a destination illustration https://www.rawpixel.com/image/476161/free-photo-image-finishing-line-pathway-finishView license[Untitled photo, possibly related to: Williams, Arizona. On the Atchison, Topeka and Santa Fe Railroad between Winslow and… https://www.rawpixel.com/image/12292951/photo-image-plant-person-skyFree Image from public domain licenseFreight train operations on the Chicago and Northwestern Railroad between Chicago and Clinton, Iowa. The train rounds a long… https://www.rawpixel.com/image/12291216/photo-image-sky-road-public-domainFree Image from public domain license[Untitled photo, possibly related to: Williams, Arizona. On the Atchison, Topeka and Santa Fe Railroad between Winslow and… https://www.rawpixel.com/image/12292642/photo-image-plant-forest-treeFree Image from public domain licenseHighway leading into Junction, Texas, which is in the center of the goat and sheep raising country of west Texas by Russell… https://www.rawpixel.com/image/12147706/image-plant-art-vintageFree Image from public domain license[Untitled photo, possibly related to: Quirk (vicinity), New Mexico. A train rounding a curve along the Atchison, Topeka and… https://www.rawpixel.com/image/12292258/photo-image-sky-road-mountainFree Image from public domain licenseHighway leading down to the gorge at the Columbia River from the bench land. Klickitat County, Washington by Russell Lee https://www.rawpixel.com/image/12152354/image-plant-art-vintageFree Image from public domain license[Untitled photo, possibly related to: Highway leading down to the gorge at the Columbia River from the bench land. Klickitat… https://www.rawpixel.com/image/12151737/image-plant-art-patternFree Image from public domain license[Untitled photo, possibly related to: Flagstaff (vicinity), Arizona. Diesel freight train rounding a curve on the Atchison… https://www.rawpixel.com/image/12292628/photo-image-plant-sky-treeFree Image from public domain licenseSharp curves are prevalent along the highway at Carrizo Creek. Navajo County, Arizona by Russell Lee https://www.rawpixel.com/image/12151176/image-plant-art-vintageFree Image from public domain license[Untitled photo, possibly related to: Quirk (vicinity), New Mexico. A train rounding a curve along the Atchison, Topeka and… https://www.rawpixel.com/image/12292512/photo-image-cloud-sky-smokeFree Image from public domain license[Untitled photo, possibly related to: Williams, Arizona. On the Atchison, Topeka and Santa Fe Railroad between Winslow and… https://www.rawpixel.com/image/12292653/photo-image-plant-person-treeFree Image from public domain licenseMap route to a destination illustration https://www.rawpixel.com/image/476163/free-photo-image-wave-point-boat-beginView licenseHolabird ordnance depot, Baltimore, Maryland. All United States Army drivers are warned to take it easy around curves. One… https://www.rawpixel.com/image/12294249/photo-image-plant-sky-treeFree Image from public domain licenseKlondike (vicinity), California. Going around a curve on the Atchison, Topeka and Santa Fe Railroad between Needles and… https://www.rawpixel.com/image/12294111/photo-image-plant-sky-roadFree Image from public domain licenseWilliams, Arizona. On the Atchison, Topeka and Santa Fe Railroad between Winslow and Seligman, Arizona, going around a curve… https://www.rawpixel.com/image/12292946/photo-image-person-sky-mountainsFree Image from public domain licenseGoffs (vicinity), California. A diesel freight train going around a curve on the Atchison, Topeka, and Santa Fe Railroad… https://www.rawpixel.com/image/12294089/photo-image-plant-sky-roadFree Image from public domain license[Untitled photo, possibly related to: Highway leading into Junction, Texas, which is in the center of the goat and sheep… https://www.rawpixel.com/image/12146923/image-plant-art-skyFree Image from public domain license