https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13998715Edit ImageSaveSaveEditCropCustom TextGeology: the Great Aletsch glacier and the Märjelensee in the Valais. Lithograph by E. Cicéri, 1862, after F. Martens.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 942 px | 300 dpiLarge JPEG 3000 x 2355 px | 300 dpiFree DownloadGeology: the Great Aletsch glacier and the Märjelensee in the Valais. Lithograph by E. Cicéri, 1862, after F. Martens.More