It's hard to believe this went unnoticed for so long, but Russian police have discovered an entire subterranean city
hidden below a Moscow market:
The city contained a factory complete with sewing machines and tables where the illegal migrants were kept to sew clothes.
The underground complex was also equipped with a market, cafe, cinema and casino.
It is not the first time Moscow’s Federal Migration Service have discovered a clandestine factory in 2011 a similar settlement was found in an abandoned Soviet-era bomb shelter.
Euronews video of the city can be seen
here.