Some northern European acidic anaerobic peat bogs have proved to have the capability to preserve mammalian tissue for millennia. Examples of this conservation are [[Tollund Man]] and [[Haraldskær Woman]], both recovered from peat bogs with remarkable intact skin, internal organs and skeletons. | Some northern European acidic anaerobic peat bogs have proved to have the capability to preserve mammalian tissue for millennia. Examples of this conservation are [[Tollund Man]] and [[Haraldskær Woman]], both recovered from peat bogs with remarkable intact skin, internal organs and skeletons. |