|Max. length||32 km (20 miles)|
|Max. width||10 km (6.2 miles)|
|Surface area||298 km2 (115 sq mi)|
|Max. depth||80 m (260 ft)|
|Surface elevation||85 m (279 ft)|
Lake Iznik (Turkish: ?znik Gölü) is a lake in the Province of Bursa, Turkey. It is around 32 km in length and 10 km in width with a maximum depth of about 80 m. The town of Iznik (historically known as Nicaea) lies at its eastern end. The lake's Ancient Greek name was Askania (?); the Latin name was Ascania.
In Greek mythology, during the Trojan War the region by the Lake ?znik was held by the Phrygians, who sent troops to the aid of King Priam, led by the brothers Phorcys and Ascanius, sons of Aretaon as related in the Iliad.
In 2014, during aerial photography to survey the local monuments, the remains of an underwater Byzantine basilica -possibly erected in the 4th century- were identified, a discovery which was named one of the top 10 discoveries by the Archeological Institute of America. The basilica was dedicated to St. Neophytos of Nicaea and it is thought that the effects of an earthquake which took place in A.D. 740 provoked its collapse. Plans are on the way to establish an underwater museum.
The lake, which is in unprotected status, was declared by BirdLife International as an Important Bird Area in 1989 for its waterfowl species, which are threatened through pollution and development of ?znik as a recreational center.