Two Moscow inhabitants decided to explore collecting system under the building where they live. So they found the right gully grating, opened it and came down. How they were surprised, discovered the whole system of caves with the real underground river.
Now they say, that it is one of their favorite places in Moscow to have a walk at evenings, or just to have a rest near river right under the house. See also: Moscow Underground Tunnels (HDR) Moscow Sewerage Moscow Dungeons
It's hard to speak about fashion in Soviet Union. The production of clothes, as any other production, was in the hands of the State. So there simply was no choice left what to buy. All stylish clothes from the Western world countries, as any other foreign goods, were forbidden. People wearing such clothes were called "stilyaga" ("dandy" with very negative connotation). Even more, such life style was pursuing by the legendary KGB department (State Security Committee). So looking too fashionable was forbidden and even
dangerous. As for women, they could not look too attractive also. It was forbidden. Otherwise they would get some problems with entry into Komsomol (Young Commuinist League) and, as a result, problems with getting job. In the USSR every person should be the member of that political organization. Of course, within these strict moral borders, there was a fashion in Soviet Union. Or it could be called "the Soviet style". Here are some art works and public posters of that time.
War games were quite usual and sometimes even obligatory thing in Soviet Union both for children (pioneers) and for adults. "Zarnitsa" (sheet lightning) was the most widespread and famous one, when a big
group of people was divided into two confronting teams. The aim was to capture a flag, "secret" documents or army headquarters. Here are some historical photos. It looks like a real war.