archive.org/web/20161017064344/http://www.panoramio.com/user/4645711?with_photo_id=42922259 operator: Panoramio described at URL: https://web.archive...
English operator: Panoramio described at URL: https://web.archive.org/web/20161019203346/http://www.panoramio.com/photo/50718052 determination method...
English operator: Panoramio described at URL: https://web.archive.org/web/20161023200449/http://www.panoramio.com/photo/50718684...