Mannarsala is a sacred grove covered with massive trees and twisting serpentine vines giving the temple an enigmatic and mystic ambiance. It is 32 kms south of Alappuzha situated near Harippad. This is a serpent shrine under the patronage of a 'Brahman' family, headed by a priestess. The ancient shrine is an internationally renowned pilgrim centre dedicated to the Serpent God Nagaraja. Sarpa Yakshi and Naga Yakshi are the beloved consorts of Nagaraja. It is believed that Nagaraja as the installed deity is endowed with the form of Hari (Lord Vishnu) and the spirit of Lord Shiva. Legend has it that the first priestess of Mannarasala gave birth to a five-headed snake, which is believed to reside in the ancestral house to safeguard the family. The most popular offering of this temple is ‘Uruli Kamazhthal’, the placing of a bell metal vessel upside down in front of the deity, which is believed to restore fertility to childless couples. A special turmeric paste available at the shrine is credited with powers to cure even leprosy.