What is "tasagar"

Tasagar is a rural locality (a selo), the only inhabited locality, and the administrative center of Tasagarsky Rural Okrug of Vilyuysky District in the Sakha Republic, Russia, located from Vilyuysk, the administrative center of the district. Its population as of the 2010 Census was 544, of whom 277 were male and 267 female, down from 571 as recorded during the 2002 Census.