https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13969291
St. Peter-in-the-East, Oxford: crypt showing bones and skulls. Coloured aquatint by J. Bluck, 1813, after F. Nash.
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use