See Omkareshwar, East Nimar

Omkareshwar, East Nimar

Omkareshwar is a town and a nagar panchayat in Khandwa district in the Indian state of Madhya Pradesh. On the south bank of the Narmada, it contains one of the twelve great lingas of Shiva.-Demographics:...

 for town of the same name
Omkareshwar is a Hindu

Hindu

Hindu refers to an identity associated with the philosophical, religious and cultural systems that are indigenous to the Indian subcontinent. As used in the Constitution of India, the word "Hindu" is also attributed to all persons professing any Indian religion...

 temple

Temple

A temple is a structure reserved for religious or spiritual activities, such as prayer and sacrifice, or analogous rites. A templum constituted a sacred precinct as defined by a priest, or augur. It has the same root as the word "template," a plan in preparation of the building that was marked out...

 dedicated to God Shiva. It is one of the 12 revered Jyotirlinga

Jyotirlinga

A Jyotirlinga or Jyotirling or Jyotirlingam is a shrine where Lord Shiva, an aspect of God in Hinduism is worshipped in the form of a Jyotirlingam or "Lingam of light." There are twelve traditional Jyotirlinga shrines in India....

 shrines of Shiva

Shiva

Shiva is a major Hindu deity, and is the destroyer god or transformer among the Trimurti, the Hindu Trinity of the primary aspects of the divine. God Shiva is a yogi who has notice of everything that happens in the world and is the main aspect of life. Yet one with great power lives a life of a...

.

It is on an island called Mandhata or Shivapuri in the Narmada

Narmada River

The Narmada , also called Rewa is a river in central India and the fifth largest river in the Indian subcontinent. It is the third largest river that completely flows within India after Ganges and Godavari...

 river; the shape of the island is said to be like the Hindu ॐ

Aum

Om or Aum Om or Aum Om or Aum (also , written in Devanāgari as and as , in Sanskrit known as (lit. "to sound out loudly"), ', or ' (also as ') (lit. "Auṃ form/syllable"), is a sacred/mystical syllable in the Dharmic or Indian religions, i.e...

 symbol.

There are two temples here, one to Omkareshwar (whose name means "Lord of Omkaara or the Lord of the Om Sound") and one to Amareshwar (whose name means "Immortal lord" or "lord of the Immortals or Devas").

But as per the sloka on dwadash jyotirligam, Mamleshwar is the jyotirling, which is on other side of Narmada river.
Omkareshwar Jyotirlinga also has its own history and stories.Three are them are prominent.
The first story is about Vindhya Parvat (Mount).