https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/441197Edit ImageSaveSaveEditCropCustom TextSand dunes and ripples in Proctor Crater, Mars. Original from NASA. Digitally enhanced by rawpixel.MorePublic DomainFree CCO U.S. Government image for Personal and Business useInfoView CC0 LicenseJPEGTIFFSmall JPEG 1200 x 900 px | 300 dpiLarge JPEG 2560 x 1920 px | 300 dpiTIFF 2560 x 1920 px | 300 dpi | 28.16 MBFree DownloadSand dunes and ripples in Proctor Crater, Mars. Original from NASA. Digitally enhanced by rawpixel.More