Don’t go there- if it exists, that is!
Nobody really knows if Metro 2 actually exists- but if it does, it is definitely out of bounds to the general public.
Rumor has it that Metro 2 (a highly secretive subway) was constructed under instructions from Stalin for Russia’s Secret Service and elite government officials.
There is still debate as to whether or not it exists and it is yet to proven that it actually does exist. However, there have been people that have been interviewed who say they worked in Metro 2. You decide!