A city in the region that for some reason has been closed off. That is, (almost) all traffic in and out of the city is controlled and monitored. The player characters know that this can happen to some cities that have military and strategic importance. To the residents of the city this means that they are not allowed to discuss where they are from or the name of the city, and if they ever want to bring guests from the outside they will more likely than not have their request refused. The residents of a closed city also tend to have slightly better living conditions than other urban residents. The city is probably fenced in like this since they are in a region of Russia that is quite close to China and Mongolia, and perhaps the city could house some millitary projects or research projects. Perhaps it has something to do with the facility they discovered.