Ul'kan
The Ulkan descends from the western slopes of the Baikal Range to join the Kirenga from the right. Its upper waters begin in mountain streams; after receiving the Shona, the river turns north through hilly taiga where aspen and larch grow. The Kirenga carries its waters to the Lena. Thus the mountains near Lake Baikal divide the lake's own basin from rivers flowing north toward the Arctic.