Karnaprayag is the location where Alaknanda River is joined by the Pindar River that originates from the Pindar glacier, below the Nanda Devi hill range.The epic Mahabharata legend narrates that Karna did penance here and earned the protective gear of Kavacha (armour) and Kundala (ear rings) from his father, the God Sun which gave him indestructible power
The stone seat where Karna did penance is also seen here. A temple built in recent times to commemorate Karna has the deity of goddess Uma Devi (daughter of the Himalayas) here. The stone temple was rebuilt by guru Adi Shankaracharya..