According to Hinduism, Lord Shiva, the destroyer of ignorance and illusion, resides at the summit of a legendary mountain named Kailāsa, where he sits in a state of perpetual meditation along with his wife Pārvatī. According to Charles Allen, one description in the Vishnu Purana of the mountain states that its four faces are made of crystal, ruby, gold, and lapis lazuli. It is a pillar of the world and is located at the heart of six mountain ranges symbolizing a lotus. The largest and most important rock-cut temple, Kailash Temple at Ellora, Maharashtra is named after Mount Kailash. Many of its sculptures and reliefs depict episodes relating to Lord Shiva and Maa Parvati, including Ravana's tale. (Ravana was a devotee of Lord Shiva. Ramayana does not document Ravana shaking the mountain.) Ravana's mother had fallen ill. As they were great Lord Shiva devotees, he had attempted to carry the temple on his back to bring it closer to his mother. Shiva, being stunned by his boldness, had blessed him with immortality as Ravana had passed Lord Shiva's test of devotion.