Madhuvana is mentioned in the 61st Sarga/Chapter of Sundara Kanda in Valmiki Ramayana.
After seeing Sita in Lanka, fighting with Rakshasas, providing a sane advice to Ravana, causing massive destruction to Lanka by igniting fire, Shri Hanuman comes back to the place where the vanaras headed by Angada were eagerly waiting.
After reporting his adventures to Angada, Jambavan and Vanaras, Shri Hanuman asks their opinion as to the course of further action to be taken by them. Jambavan advises all to return to Kishkinda and report all the issues to Shri Rama and Sugriva and follow their orders. And, Angada consents to this idea.
Thereafter, they flew back to Kishkinda. On the way the Madhuvana was sited by them.
Madhuvana is a charming grove; which was granted as a boon to the ancestors of Sugriva. A very powerful Vanara called Dadhimukha, the maternal uncle of Sugreeva, always protected that garden. Madhuvana , the garden abounded with honey, which was protected grove, unapproachable for all and looking fascinated to the soul of all beings.
With the permission of Angada, the vanaras enter the Madhuvana and drank the honey and in intoxicated stage caused havoc in the Madhuvana. Dadhimukha, alongwith the guards tried to stop them but was overpowered by Angada and the other vanaras.
Finally, the issue was reported to Sugriva, who pardons the misdeed of the vanaras.
