Where was Kashchey the Deathless filmed?

1945 black and white Soviet fantasy film directed by Alexander Rou

Kashchey the Deathless (1945) was filmed in Dushanbe and Oziorki (sielsowiet oziorski), 2 places named in its Wikipedia article, in Tajikistan, Russia. Wikidata records no filming location for it at all, so the article is the only recorded source. Each place says where its claim comes from.

See them on the map → Wikipedia Source data