Hanuman assumed Panchamukhi or 5-faced kind to kill Ahiravana, a strong rakshasa black-magician and practitioner of your dark arts throughout the Ramayana war. Ahiravana, brother of Ravana, experienced taken Lord Rama and Lakshmana to netherworld as captive, and the sole solution to eliminate him was to extinguish 5 lamps burning https://www.facebook.com/share/1J6iVuTuXb/