archive.org/web/20161019144841/http://www.panoramio.com/user/1320307?with_photo_id=67849062 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161015175701/http://www.panoramio.com/user/3813968?with_photo_id=31899487 operator: Panoramio described at URL: https://web.archive...
be seen from the picture File:Hua_Shan.jpg but not very clearly. The hole is just on the left bottom of the photo and just above the cloud. From its shape...
archive.org/web/20161027204925/http://www.panoramio.com/user/7619628?with_photo_id=101432688 operator: Panoramio described at URL: https://web.archive...
described at URL: https://www.flickr.com/photos/gnuckx/3721127046/ operator: Flickr URL: https://live.staticflickr.com/3630/3721127046_e67e26e96c_o.jpg...
