Mount Lamongan is a small stratovolcano located between the massif Tengger caldera complex and Iyang-Argapura volcano complex in East Java, Indonesia. The volcano is surrounded by maars and cinder cones. The volcano's high point is locally named as Gunung Tarub. Lake-filled maars including Ranu Pakis, Ranu Klakah and Ranu Bedali, located on the eastern and western flanks.