https://secure.wikimedia.org/wikipedia/en/wiki/Image:Ninh_Binh2.png Added reference on map to CucPhuongNationalPark. English determination method: SHA-1
described at URL: https://www.flickr.com/photos/hdsjulian/15706323528/ operator: Flickr URL: https://live.staticflickr.com/7463/15706323528_8e80f9a328_o.jpg