Took me an hour to see the video, but it was all worth it.  My only fear is that the old ancient manuscripts in those ancient caves can be plundered by international thiefs and sold/auctioned in place like New York or London.  Those locations should be protected by the government!  Please see the video if you have not done so yet!  In our religious books, it is mentioned people of higher order (Yogis/sanits/godly figures, etc) used to go to high up in the Himalayas to meditate to achieve Nirvana.  Those caves could be the places where these people used to go and meditate!  Someday, i wish i could go there!