https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14021575Edit ImageSaveSaveEditCropCustom TextM0001605: Photograph of two men in the bough of a cinchona tree using a pulley to collect cinchona seedsOriginal public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 1170 px | 300 dpiLarge JPEG 1378 x 1344 px | 300 dpiFree DownloadM0001605: Photograph of two men in the bough of a cinchona tree using a pulley to collect cinchona seedsMore