22 km from Karnaprayag, Nand Prayag at 914 m forms the confluence of the Alaknanda & Mandakini (flowing from a glacier near Nanda Devi Peak) rivers. On their way to Tapovan across Kunwari Pass or on their way to Roopkund, it is popular with trekkers.

It is said that the confluence is named for the pious Raja Nanda. According to one legend, the king had been promised the boon of Vishnu as a son. Unfortunately, the same boon had been granted to Devki, the imprisoned sister of the tyrant king, Kansa. Ultimately, the gods found an ingenuous solution: Vishnu would be born as Krishna to Devki but would be brought up by Raja Nandas wife, Yasodha.