The sayan range is bordered on the east by the mountains of the baikal region 萨彦岭的东边与贝加尔湖区的山脉相邻。
2.
The russian plain is bordered on the south by the caucasian mountain range . the rivers ob and yenisei flow into the arctic ocean from the altai and sayan mountains 俄罗斯平原南边与高加索山脉毗接。鄂毕河和叶尼塞河的源头分别起源于阿尔泰山和萨彦岭，流入北冰洋。
