Nattadreeswarar Temple (Nattātreeswarar) is a Shiva temple. It is said that the linga at the temple was consecrated by Agastya muni over 6000 years ago. It is made of sand mixed with some traditional compound of those days. There is a place to sit and meditate. You can go into meditative states here effortlessly.
How to get there:
The temple is located 17 kms South East of Erode. It is located on a hillock island within River Kaveri, near Erode, off the Erode–Karur Highway., halfway between Kudagu and Bay of Bengal at Kaveripoompattinam. You can take a cab from Erode to the temple and return as public transport is not available.
Map: https://goo.gl/maps/tvMwVWHdNu6HXq6F8
About Nattatreeswarar Temple
Nattadreeswarar Temple (Nattātreeswarar) is a Hindu temple dedicated to Lord Shiva. It is located on a hillock island within River Kaveri, near Erode, off the Erode–Karur Highway.,[1][2] halfway between Kudagu and Bay of Bengal at Kaveripoompattinam.
The Nattatreeshwarar temple is a very wonderful temple located at the midpoint of Cauvery river. It is on an island in Cauvery exactly halfway along the river’s course from Talacauvery to the ocean, so it is seen as the navel of Cauvery. It is said that the linga at the temple was consecrated by Agastya muni over 6000 years ago. It is made of sand mixed with some traditional compound of those days. This sand linga is still physically intact, and in terms of the energy, it is explosive! Though it is 6000 years old, it feels like it was just consecrated yesterday.
It is generally believed that Agastya muni left his energies and his subtle body in this space. It is said that he left his mental body or manomayakosha at Chaturagiri Hills near Madurai, and with the help of Kartikeya, he is said to have taken his physical body to Kailash, where Shiva was, and left it there. That is a spectacular way of doing things.
In some way Agastya was looking at Cauvery as a living body and he established the navel center at Nattatreeshwarar in such a way that the upward and downward movement of energy happens in a proper way. The most significant aspect of the culture of this land is that human survival and prosperity were only a consequence, not the goal of life. The goal of life was always the blossoming of the human being. Many great beings invested energies in certain ways to support human growth and the blossoming of individual human beings. They created the necessary energy systems and tried to make everything into a possibility towards that – even a river! (Sadhguru)
Source:
https://isha.sadhguru.org/us/en/wisdom/article/agastya-muni-story