
thumb|Map of the Metro-2 system as supposed by the United States military intelligence.
thumb|Map of the Metro-2 system as supposed by the United States military intelligence.
Metro-2 () is the informal designation for a clandestine and officially-unacknowledged deep underground metro system in the Moscow metropolitan area. It was designed to provide the Soviet leadership with secure wartime evacuation routes, communication hubs, and command posts, including a dedicated bunker for the national command authority. One such bunker is located beneath the Kremlin.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).