English operator: Panoramio described at URL: https://web.archive.org/web/20161024090227/http://www.panoramio.com/photo/20746917...
English operator: Panoramio described at URL: https://web.archive.org/web/20161024090106/http://www.panoramio.com/photo/20746926...
English operator: Panoramio described at URL: https://web.archive.org/web/20161030183724/http://www.panoramio.com/photo/112951501 determination method...