This is situated 32 kms from Alleppey, near Haripad. The temple is one of the most important centres of serpent worship, in Kerala. The Kerala custom of snake worship reaches a climax at Mannarasala, where there is a sacred grove and a temple dedicated to Nagaraja, king of the snakes. Every house is supposed to have a 'sarpa-kavu' or a snake house with a 'nagakal' or snake stone. Those who cannot maintain one, send their snake stone to Mannarasala. A priest called a Nambiathiry looks after the temple. Childless couples who come to pray there bring an 'urli' as an offering to the priest.