marked by the Sayan range to the west of Irkutsk.
long.), separating the government of Irkutsk from that of Transbaikalia, and has a length of 386 m.
above the level of the Angara at Irkutsk (Zapiski Russ.
After approaching its south-west extremity it abandons the broad valley which leads to the lake, and makes its way northwards through a narrow gap in the mountains and joins the Angara at Irkutsk.
Attempts are being made to render the Angara navigable below Irkutsk down to the Yenisei.