The Neglinnaya, also known as Neglinka, Neglinna, Neglimna, is a 7.5 km underground river in the central part of Moscow and a tributary of the river Moskva. It flows in the tunnels under Samotechnaya Street, Tsvetnoy Boulevard, Neglinnaya Street and Alexander Garden and Zaryadye. The Neglinnaya discharges into the Moskva through two separate tunnels near Bolshoy Kamenny Bridge and Bolshoy Moskvoretsky Bridge.