The central shrine of temple is most commonly referred as Peragam, while the smaller shrine where the image of the snake god Adisesha is houses is called Tiruoorgam. As per traidition, Mahabali at the foot of Vamana could not view the Viswaroopam and requested to have a smaller form. Vishnu obliged and appeared as a snake in a smaller shrine. The shrine is frequented by childless couple praying for offspring.