https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/440250Edit ImageSaveSaveEditCropCustom TextThese rocks are famous because they move, leaving tell-tale trails in the clay, like this one. Original from NASA. Digitally enhanced by rawpixel.MorePublic DomainFree CCO U.S. Government image for Personal and Business useInfoView CC0 LicenseJPEGTIFFSmall JPEG 900 x 1200 px | 300 dpiLarge JPEG 1147 x 1530 px | 300 dpiTIFF 1147 x 1530 px | 300 dpi | 10.07 MBFree DownloadThese rocks are famous because they move, leaving tell-tale trails in the clay, like this one. Original from NASA. Digitally enhanced by rawpixel.More