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Breakthrough is a 1986 Soviet disaster film directed by Dmitri Svetozarov.

Plot

The film shows a major accident that occurred during the construction of a tunnel leading to the fictional station Petrovskaya of Leningrad Metro. It is based on a similar accident in 1974, in the tunnel between stations Lesnaya and Ploschad Muzhestva, playing up its unique design and geological conditions.

    Cast