English operator: Panoramio described at URL: https://web.archive.org/web/20161024123008/http://www.panoramio.com/photo/87900577 determination method...
archive.org/web/20161024031730/http://www.panoramio.com/user/3343656?with_photo_id=58073033 operator: Panoramio described at URL: https://web.archive...