watch?v=J7_6GsLJaL4
(fleeting) nudity at around 3:30, 6:10 & 9:25 - full video is 12:52
This is another public banya. The guys seem totally at ease with each other and apparently unconcerned that they are being filmed - even naked. I don't understand Russian generally, but can pick out a few words, including that the temperature was -9ºC (15.8ºF).
One doesn't need to understand Russian to appreciate the relaxed, friendly male camaraderie that is going on there. Such male bonding seems to be an important factor in Russian culture and hearkens back to the time when I visited public saunas (attached to swimming baths) in the 1990s. These were single sex and (for men at least) naked.
The difference then was that such venues had not become gay cruising grounds that (even not specifically gay places) in the West have become. The relaxing atmosphere as seen with these Russians have given way to one of seediness and tension.