It is right on the banks of the mahamaham kulam
The legends of the temple;
The nine rivers of India prayed to Shiva that since they were washing the sins of people they were getting dirty so to be cleansed Shiva directed them to come here once in 12 years to be purified
Rama was directed here by Agasthiya rishi before his journey to Lanka. Since Rama was a maryada purusha he lacked the Roudram or anger to fight a battle, he learnt it from the Sthala lingam called Mahalingam in the temple which is nestled under the neem tree
The main sannidhi has sivan as a small lingam with Visalakshi in the south facing sannidhi. both found in the main complex seen above
Ambal sannidhi seen above
The Maha lingam under the neem tree where Rama learnt Roudram.
The saptha kannika mandabam with the idols for each river