When Ravana heard the tragic news of the death of his son, Ahi-ravana, he collapsed and fell on the ground. He lamented his loss, long and loud. Tears flowed in streams from his eyes. Ravana said to himself: “Now my kith and kin have been decimated. There is no one left alive.” Just then, an aged Minister said, “Why do you say so? You have another surviving son, Narantaka, who has with him 72 crores [a crore is ten million] of Rakshasas. Call him for support. Send a messenger immediately. He can destroy the enemy. You need have no doubt.” Ravana was delighted at these words. He sent the messenger, named Dhumaketu, with instructions to bring with him the clever Narantaka. The messenger described the tragedies that had overtaken Lanka and communicated the urgent appeal Ravana had made for his help. He proceeded, on the spot, with his hordes and as soon as he reached the field he fell upon the Vanara forces. Hanuman spied him from far. He went forward to confront him. On seeing him and his terror-striking form, Narantaka was struck with fear. He asked Dhumaketu who he was and was told that he was Hanuman, the invincible hero who had killed all his brothers. Hearing this, Narantaka became even more ferocious. He placed arrows on his bow and let them off against Hanuman; but, he caught them all by the hand and broke them to pieces. He came very close to Narantaka and pounded his breast heavily with his clenched fist. He lifted him aloft and turning him around fast, threw him deep into a Nether Region named Rasatala. Millions of his Rakshasa followers were thrown into the sea. He broke into smithereens the chariots in the army of Narantaka. The charioteers were also decimated. (RKRV Part II, pp. 244-246)