What is "kyyy"

Kyyy is a rural locality (a selo), the only inhabited locality, and the administrative center of Tyarasinsky Rural Okrug of Tattinsky District in the Sakha Republic, Russia, located from Ytyk-Kyuyol, the administrative center of the district. Its population as of the 2010 Census was 818, of whom 399 were male and 419 female, up from 795 as recorded during the 2002 Census.