Lake TytylLake Tytyl is a lake of Bilibinsky District, Chukotka [Autonomous Okrug], Russia.GeographyThe lake has a basin area of. River Tytylvaam flows from it. It is located east of Lake Ilirney, at the feet of the southern slopes of the Ilirney Range, in the upper reaches of the Maly [Anyuy River], 55 km from Ilirney village. Its name originated in the Chukchi word for "entrance gate".