I would probably rate Hanle in Ladakh the utlimate astrophotography destination in the world with its Class 1 Bortle Scale night skies.
In 2017, i spent 20 nights under the skies of Hanle, in two sessions of 10 nights each in April and September. I came away with nearly 50000 images and over 100 timelapse sequences, the result of which one can see in this video.....