“Shukadeva Gosvami said: After constructing a bridge over the ocean by throwing into the water the peaks of mountains whose trees and other vegetation had been shaken by the hands of great monkeys, Lord Ramachandra went to Lanka to release Sitadevi from the clutches of Ravana. With the direction and help of Vibhishana, Ravana's brother, the Lord, along with the monkey soldiers, headed by Sugriva, Nila and Hanuman, entered Ravana's kingdom, Lanka, which had previously been burnt by Hanuman.” (Shrimad Bhagavatam, 9.10.16)