In 1620 a group of fur hunters led by the semi-legendary Demid Pyanda started out from Turukhansk on what would become a very protracted journey. According to folk tales related a century after the fact, in the three and a half years from 1620 to 1624 Pyanda allegedly traversed the total of of hitherto unknown large Siberian rivers. He explored some of the Lower Tunguska (Nizhnyaya Tunguska in Russian) and, having reached the upper part of the Tunguska, he came upon the great Siberian river Lena and explored some of its length. By doing this, he may have become the first Russian to reach Yakutia and meet Yakuts. He returned up the Lena until it became too rocky and shallow, and by land reached Angara. In this way, Pyanda may have become the first Russian to meet Buryats. He built new boats and explored some of the Angara, finally reaching Yeniseysk and discovering that the Angara (a Buryat name) and Upper Tunguska (Verkhnyaya Tunguska, as initially known by the Russian people) were one and the same river.