https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13984784Edit ImageSaveSaveEditCropCustom TextThe salt mines at Dürrenberg: men are climbing ladders, hammering and carrying heavy loads on their backs. Etching.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 802 px | 300 dpiLarge JPEG 3200 x 2138 px | 300 dpiFree DownloadThe salt mines at Dürrenberg: men are climbing ladders, hammering and carrying heavy loads on their backs. Etching.More