Dehradun includes various Puranic stories and cultures. It is mentioned in the Ramayana that Lord Rama, along with brother Lakshmana, came to the area after defeating Ravana, the Rakshasa king of Lanka. The area is also linked to Dronacharya, the guru of the Kauravas and Pandavas in the Mahabharata. The area of Rishikesh is mentioned in the Skanda Purana as having been given to rishis (sages) by Lord Vishnu after killing the asuras Madhu-Kaitabha and their companions who tormented the rishis. Ancient temples, statues and archaeological remains have been found at the sites in and around the area that are mentioned in the Ramayana and the Mahabharata. These remains have been dated to be approximately 2000 years old.