TM-3-12 railway gun at Krasnaya Gorka military museum. TM-3-12 is the 305-mm railway artillery gun built in the 1938 as an extra-heavy railway artillery system with guns from the sunken battleship “Empress Maria”. Then 3 copies of such guns were produced, combined into the 9th separate artillery railway division. Krasnaya Gorka (meaning "red hill") is a coastal artillery fortress west of Lomonosov (Saint Petersburg) on the southern shore of the Gulf of Finland, opposite Kotlin Island and the Baltic Fleet's base at Kronstadt. There is a unique museum of II World War here today.
