It is 6 kms from the Kunzam Pass that connects Spiti and Lahaul. Surrounded by snows and acres of scree, this deep blue-water lake has a circumference of 2.5 kms. This is the source of the river Chandra. According to some believers, this is the spot from where the god Indra's chariot took the eldest Pandava brother, Yudhishtra to swarga, heaven in his mortal form.