https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13951442Edit ImageSaveSaveEditCropCustom TextFour men in the basket of a balloon with some equipment. Wood engraving by Smyth after a photograph by Mayall.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1024 x 1200 px | 300 dpiLarge JPEG 2556 x 2994 px | 300 dpiFree DownloadFour men in the basket of a balloon with some equipment. Wood engraving by Smyth after a photograph by Mayall.More