Tonguo

The Tonguo begins on the Lena Plateau where the Orto-Sala and Anabyl meet. It flows through the forested country between the Lena and Vilyuy before joining the latter from the right. The Vilyuy turns eastward across Yakutia and eventually enters the Lena. Lakes and streams interrupt the surrounding lowlands, and the long northern winter freezes the waterways until the brief warmer season returns.