Hanuman assumed Panchamukhi or 5-confronted form to destroy Ahiravana, a powerful rakshasa black-magician and practitioner of the dark arts throughout the Ramayana war. Ahiravana, brother of Ravana, experienced taken Lord Rama and Lakshmana to netherworld as captive, and the only real technique to destroy him was to extinguish 5 lamps https://www.facebook.com/share/1J6iVuTuXb/