This is a small town situated at 110 km from Madhurai on the way to Kambam, Kottayam. This town has two old temples one dedicated to Lord Shiva, Sri Kaalahasthiishwara Swami temple, and the other one to Lord VishNu, Sri Narasimha Swami temple. Sri Kaalahasthiishwara Swami temple is situated on the bank of river periyaaRu, where it runs uththaravaahiNi (towards north), which is considered quite auspicious. It is amid of green paddy fields.

It is said that one of the devotee here used to go to KaaLahasthi regularly. When he became old he was not able to go to KaaLahasthi to pray the Lord. So the God of KaaLahasthi appeared in this village to bless him. Hence the place is called DhakshiNa KaaLahasthi or ThenKalaththi.

It is also said that three kings who ruled the nearby regions came to a war pact and started constructing the temple at this place. The temple also lodges some nice paintings belonging to Naayakkar dynasty. 
Sri Narasimha Swami temple is situated inside the town