Byoryolyokh

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Byoryolyokh is a river in the Sakha Republic (Yakutia), Russia. It begins near two small rivers north of the Polousny Range and flows northeast across the Yana-Indigirka Lowland for about 754 kilometers, eventually joining the Indigirka River as its left-hand distributary near Chokurdakh. The river’s basin covers about 17,000 square kilometers. Its main tributaries are the Wese-Killah on the left and the Ulakhan-Killah (Tiit), Selgannah, and Ary-May on the right. There are more than 9,000 lakes in the basin. In the lower part of its course the river is also known as Yelon.

The Byoryolyokh has a famous paleoarchaeological connection: more than 8,000 bones from at least 140 woolly mammoths have been found at a single spot along the river, suggesting they were swept there by the current. The Yakut name Börölööx means “teeming with wolves.” The area around the river hosts one of the northernmost Paleolithic sites. The river typically floods in July and August and freezes solid in winter. From here, waters eventually reach the East Siberian Sea via the Indigirka.