The Naganathar Temple known as the Kethu Navagrahasthalam is located in keezperpallam in Tiruvenkaadu.This place is also called Vanagiri. Kethu prayed to Naaganaadhaswami and was blessed and rid of his sins by Lord Siva. It is rare to find Kethu with his head. At this sthala, he can be seen worshipping Naaganaadhaswami with his folded hands held high.

The devas and asuras churned the Paarkadal to obtain amirtham that would free them from death, keeping them alive for ever. When the amirtham emerged, Lord Vishnu in the guise of Mohini was distributing the amirtham only to the devas. He was worried that the evil deeds of the asuras will increase multifold if they consumed amirtham. Realising this, one of the asuras with the help of the asura guru Sukrachariyar, took the form of a deva and consumed the nectar. Suryan and Chandran who noticed this, complained to Lord Narayana. In anger, Lord Narayana hit the asura on the head with the spoon in his hand. The head was cut off and fell on the ground. But because the asura had consumed amirtham, his head and body continued to live. The head portion of the asura attached itself to a snake body to become Rahu Bhagavan. The body portion that was thrown away fell in Pothigai mountain region. This was found and preserved by a Brahmin. The head of a snake got attached to the asura body to become Kethu.

Persons afflicted by Kethu dosham are stricken with fears of dacoity, bad habits, loss of property, loss of face, putra dosham. By praying to Kethu Bhagavan, one can be rid of the doshams. Motcham, sight, property, land, gold, vehicle, fame, wife, children, happiness, unexpected property gains are the beneficial aspects of Kethu Bhagavan.

Knowledge, business, leprosy, poisonous bites are the aspects of this planet