https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13971009Edit ImageSaveSaveEditCropCustom TextMettray penal colony, Mettray, France: a large area in a park set up for gymnastics and other sports to take place. Lithograph by Sauvé & Faivre after A. Thierry.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 941 px | 300 dpiLarge JPEG 3406 x 2670 px | 300 dpiFree DownloadMettray penal colony, Mettray, France: a large area in a park set up for gymnastics and other sports to take place. Lithograph by Sauvé & Faivre after A. Thierry.More