Mahakaleshwar Jyotirlinga is one of the most famous Hindu temples dedicated to Lord Shiva and is one of the twelve Jyotirlingams, which are supposed to be the most sacred abodes of Shiva. It is located in the ancient city of Ujjain in the state of Madhya Pradesh, India. The temple is situated on the side of the Rudra Sagar lake. The presiding deity, Shiva in the lingam form is believed to be Swayambhu, deriving currents of power (Shakti) from within itself as against the other images and lingams that are ritually established and invested with mantra-shakti.