https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/2370797Edit ImageSaveSaveEditCropCustom TextAmerican bison, or buffaloes, trudge where private automobiles may not tread -- down a road in Yellowstone National Park in Wyoming, where all but a few tour buses, snowmobiles, and track-equipped vehicles called "Sno-Cats" are banned during wintertime.MorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 800 px | 300 dpiLarge JPEG 3000 x 2000 px | 300 dpiFree DownloadAmerican bison, or buffaloes, trudge where private automobiles may not tread -- down a road in Yellowstone National Park in Wyoming, where all but a few tour buses, snowmobiles, and track-equipped vehicles called "Sno-Cats" are banned during wintertime.More