Explanation:

The Alaknanda River, which originates in the eastern slopes of the glacier fields of Chaukhamba, is joined by the Saraswati River near Mana village and then flows in front of the Badrinath temple. It then meets the Dhauli Ganga River, which originates from the Niti Pass, to form the Vishnuprayag. This stretch of the Alaknanda River is called the Vishnu Ganga. According to legend, the sage Narada offered worship to god Vishnu at this confluence. An octagonal shaped temple located near the confluence is dated to 1889 and is credited to the Maharani of Indore, Ahalyabai. A stairway from this temple leads to the Prayag.