Make about 8 copies of your GBAO permit. Copy of the passport main page and the permit on one sheet. They will ask for them often at checkpoints.
We’re also fully from Russia, I can’t say exactly about your route, but in Uzbekistan if you have tinted windows you pay, in Tajikistan import is $25 ...
I was very impressed by Garni Temple and Geghard Monastery, because there you have a pre-Christian temple, a cave monastery, cave dwellings, and local...
