蛇紋石河

The Serpentine River is a river North of Valoran, the Summoner's Rift is situated on both sides of the River. The epic monster Baron Nashor is said to live in the river.

According to the map of Valoran, the river starts at Kaladuon, runs through Summoner's Rift and ends at the top of Crystal Scar in Kalamanda, inside the Marshes of Kaladuon and the Howling Marsh.