Vilyuysky District

Vilyuysk (; , Bülüü) is a town and the administrative center of Vilyuysky District in the Sakha Republic, Russia, located on the Vilyuy River (left tributary of the Lena), about from Yakutsk, the capital of the republic. As of the 2010 Census, its population was 10,234.

municipal district in Russia

human settlement in Russia

The Chybyda (; ) is a river in Yakutia (Sakha Republic), Russia. It is a right hand tributary of the Vilyuy, with a length of and a drainage basin area of .