Karan who was Surya putra & friend of Kaurav in Mahbhrat , was killed by Arjun in the bettle . However Karan’s last wish was that his last rites should be performed by Shri Krishna on a place where no ones last rites were performed . So Lord Krshna performed his last rites on the confluence of Pindar & Alakhnanada in Utrnachal .
After the crimnation of Karan a temple was constructed there & till today people visit the temple & perform Pooja. In the temple there are statutes of Karan & lord Krishna . The local people believe that the if they worship in this temple they will find a true friend in their life .
This is the only Karan mandir in the world .