The following result is obtained by our Internet Research Algorithm: The answer to your question is in Valmiki's Ramayana itself Following were the words of Kaykeyi - पुरा देव असुरे युद्धे पित्रा ते मम राघव | रक्षितेन वरौ दत्तौ सशल्येन महा रणे || 2-18-32 Oh, Rama! During a battle and a great war between celestials and demons long ago, I protected your father who was pierced by darts. Then, he gave me two boons." तत्र मे याचितः राजा भरतस्य अभिषेचनम् | गमनम् दण्डक अरण्ये तव च अद्य एव राघव || 2-18-33 "Oh, Rama! According to those boons, I asked the king for the coronation of Bharata and for your going to Dandaka forest today itself." In Ramayana, Dhankana Aranya was described as a vast forest passage begins immediately from the south of Yamuna spread from Bundelkhand region to Krishna river.