https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/4039722Edit ImageSaveSaveEditCropCustom TextFort Jefferson moat and wallThe Gulf of Mexico laps against the moat wall protecting Fort Jefferson. Original public domain image from FlickrMorePublic DomainFree CCO U.S. Government image for Personal and Business useInfoView CC0 LicenseJPEGBanner JPEG 1200 x 800 px | 300 dpiLarge JPEG 2555 x 1704 px | 300 dpiFree DownloadFort Jefferson moat and wallThe Gulf of Mexico laps against the moat wall protecting Fort Jefferson. Original public domain image from FlickrMore