Metro-2
A secret second metro is said to run deep beneath Moscow, linking the Kremlin to bunkers and an airport.
What was reported
Rumours have long described a secret underground railway beneath Moscow, built in the Soviet era and nicknamed Metro-2, linking the Kremlin with government bunkers, military sites and an airport.
A 1991 US Department of Defense report described underground facilities in the Moscow area, and some former Soviet officials have spoken of the system. Urban explorers have claimed to find entrances.
Explanations offered
The Russian government has never confirmed or denied that it exists. Many researchers think some secret tunnel system does exist, as in other capitals, but its size and routes are unknown, and many details in circulation are speculation.
- When
- Rumoured since the Soviet era
- Where
- Moscow, Russia
- Witnesses
- Former officials, researchers and urban explorers
- Status
- Disputed
Famous cases are real, widely reported events. Each file sets out what witnesses said and the explanations that have been offered, without taking a side.