Drona of the Mahabharata was one of the greatest archers of his era. He was the Guru of both Pandavas and Kauravas. It is believed that Dronacharya did penance for 12 years in a cave near Dehradun in Uttarakhand. The cave is today famous as the
Several years later, Ashwathama, son of Dronacharya, did penance in the cave standing on one foot. Shiva is believed to have appeared before him and blessed him with great skills in archery.
Today one can see the sculpture of Guru Drona on the entrance of the cave temple.