<P> After entering into Lanka, he finds a demon, Lankini, who protects all of Lanka . Hanuman fights with her and subjugates her in order to get into Lanka . In the process Lankini, who had an earlier vision / warning from the gods that the end of Lanka nears if someone defeats Lankini . Here, Hanuman explores the demons' kingdom and spies on Ravana . He locates Sita in Ashoka grove, where she is being wooed and threatened by Ravana and his rakshasis to marry Ravana . Hanuman reassures Sita, giving Rama's signet ring as a sign of good faith . He offers to carry Sita back to Rama; however, she refuses and says that it is not the dharma, stating that Ramayana will not have significance if Hanuman carries her to Rama - "When Rama is not there Ravana carried Sita forcibly and when Ravana was not there, Hanuman carried Sita back to Rama". She says that Rama himself must come and avenge the insult of her abduction . </P> <P> Hanuman then wreaks havoc in Lanka by destroying trees and buildings and killing Ravana's warriors . He allows himself to be captured and delivered to Ravana . He gives a bold lecture to Ravana to release Sita . He is condemned and his tail is set on fire, but he escapes his bonds and leaping from roof to roof, sets fire to Ravana's citadel and makes the giant leap back from the island . The joyous search party returns to Kishkindha with the news . </P> <P> Also known as Lanka Kanda, this book describes the Ramayana War between the army of Rama and the army of Ravana . Having received Hanuman's report on Sita, Rama and Lakshmana proceed with their allies towards the shore of the southern sea . There they are joined by Ravana's renegade brother Vibhishana . The apes named Nala and Nila construct a floating bridge (known as Rama Setu) across the sea, using stones that floated on water because they had Rama's name written on them . The princes and their army cross over to Lanka . A lengthy war ensues . During a battle, Ravana's son Indrajit hurls a powerful weapon at Lakshmana, who is badly wounded and is nearly killed . So Hanuman assumes a gigantic form and flies from Lanka to the Himalayas . Upon reaching Mount Sumeru, Hanuman was unable to identify the herb that could cure Lakshmana and so decided to bring the entire mountain back to Lanka . Eventually, the war ends when Rama kills Ravana . Rama then installs Vibhishana on the throne of Lanka . </P> <P> On meeting Sita, Rama asks her to undergo an Agni Pariksha (test of fire) to prove her chastity, as he wants to get rid of the rumors surrounding her purity . When Sita plunges into the sacrificial fire, Agni, lord of fire raises Sita, unharmed, to the throne, attesting to her innocence . The episode of Agni Pariksha varies in the versions of Ramayana by Valmiki and Tulsidas . In earlier versions, this event does not occur and many scholars consider it to have been added later as society became more patriarchal . In Tulsidas's Ramacharitamanas, Sita was under the protection of Agni (see Maya Sita) so it was necessary to bring her out before reuniting with Rama . At the expiration of his term of exile, Rama returns to Ayodhya with Sita and Lakshmana, where the coronation is performed . This is the beginning of Ram Rajya, which implies an ideal state with good morals . Ramayan is not only the story about how truth defeats the evil, it also teaches us to forget all the evil and arrogance that resides inside ourselves . </P>

Where did the battle between rama and ravana take place