I don't know from where you got the information. Taksang monastery which you told and show in this film that is not in Arunachal prades. It is in Bhutan. A little hiking need to visit this place which I did.
1.Sela pass 2.tawang monastery 3.taktsang gompa 4.gorichen peak 5.shonga Tsar lake 6.nuranang water falls 7.pankang teng tso lake 8bumla pass 9bup teng kang water falls 10.jaswantgarh