Situated about 73 km east of Kollam and 31 km from Punalur is the beautiful place Aryankavu, one of the important pilgrim centers of the district. The main attraction of Aryankavu is the Ayyappa Temple alias Aryankavu Sastha Temple dedicated to Lord Sastha, one among the five ancient Ayyappa temples. The unique feature of the temple is that it is built about 35 ft below the road level and has some fine structure and mural paintings. The legend behind the the Ayyappa of Aryankavu is similar to that of Sree Dharma Sastha of Sabarimala .The only difference between the two are that Sastha was brought up by the Pandi Raja of Madhura and not the Raja of Pandalam.

The two main festivals of this temple, Mandala pooja and Thrikalyanam festival, celebrated in December draws thousands of pilgrims. It is believed that Swami Ayyappan married Shri Pushkaladevi of Sourashtra community in Aryankavu. The marriage festival is held every year in Aryankavu and the marriage rituals are according to the Sourashtra community .Even now Sourashtrans reach here in groups during the time of 'Mandalapooja'. All trains towards Shencottah have a stop at Aryankavu. The Palaruvi waterfall is only 4kms away from here.