DescriptionMariengrotte - panoramio (7).jpg Mariengrotte Date Taken on 12 June 2013 Source https://www.panoramio.com/photo/92152664 Author G. Zapf Permission...
archive.org/web/20161029174728/http://www.panoramio.com/user/969909?with_photo_id=92430284 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161014114328/http://www.panoramio.com/user/1539532?with_photo_id=29326706 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161031142648/http://www.panoramio.com/user/969909?with_photo_id=122561875 operator: Panoramio described at URL: https://web.archive...
English operator: Panoramio described at URL: https://web.archive.org/web/20161014114318/http://www.panoramio.com/photo/29326700 determination method:...
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