English operator: Panoramio described at URL: https://web.archive.org/web/20161027193227/http://www.panoramio.com/photo/100934382...
English operator: Panoramio described at URL: https://web.archive.org/web/20161111044848/http://www.panoramio.com/photo/47707587...
English operator: Panoramio described at URL: https://web.archive.org/web/20161010071005/http://www.panoramio.com/photo/9722936...
English operator: Panoramio described at URL: https://web.archive.org/web/20161012150103/http://www.panoramio.com/photo/18234689 determination method:...