Kanonersky Tunnel (Russian: Канонерский тоннель) is a tunnel under the Sea Canal in the Kirovsky District of Saint Petersburg. The tunnel provides a link...

An underwater tunnel is a tunnel which is partly or wholly constructed under the sea or a river. They are often used where building a bridge or operating...

Saint Petersburg there are other kinds of crossings: Tunnels Orlovsky tunnel Kanonersky tunnel Ferries Railway ferry line "The Blue Bridge (Siniy Most)"...