This is about three kms from Nannilam railway station. The Moolavar is Sri Neela Megha Perumal in a standing position facing east and the Thaayar is Sri Kanna Pura Nayaki. Tha Utsavar is known as Sri Souri Raja Perumal. In Sanskrit, Souri mean Yugas, and Souri Raja means the Lord who takes Avatar in each Yuga. In this place the God appears in three forms at the time of Bhrahmotsavam at the time of Vaikasi (May-June). For seven days He appears as the protecting deity, Sri Maha Vishnu, in the middle of the night for about four hours in the form of Brahma (God of Creation) and in the early morning hours as Rudra (God of Destruction) the Sri Samharamurthy. This is a unique feature of this Divya Desham. Once, Vibhishana prayed to Lord Perumal, that he has seen the Lord in a lying posture in Sri Rangam, and wanted to see him in the standing posture. So the Lord gave darshan to him in a standing posture here. Seven other important features are Place, Sky, River, Sea, City, Theertham (Tank) and Vunanam, all found in this single place and it is believed that by having darshan here, one can obtain the Prasadham of 'Asthta Stothra Mandram': eight letters Mandiram.

The temple is among the 108 divyadesams of Sri Vaishnavas and comes under Choza naatu divyadesams. The presiding deity is Sri Neelamegha perumal in standing posture and thayar in a seperate sannadhi is called Kannapura nayaki. The festival idol of the Lord is Sowrirajan perumal. There is a huge temple tank right outside the temple and an Anjaneya temple besides it. The Lord gives darshan here with Prayoga chakra in hand and the utsavar perumal's hand is like giving posture (Varada hastham). The Lord is said to have shown his walking beauty to Vibeeshana at this place. The temple is among the Pancha Krishnaranya kshetram.

It is said that once a devotee who had food after offering the same to the Lord was late to the temple one day. So the devotee offered the pongal to the Lord from outside and there was a heavenly smell of sweet pongal the next morning all over the temple. Hence, the Lord is offered Pongal prasadam every night.

A king had sent in a garland of flowers for the Lord that didnt reach the temple before the king came in. Scared of the king's anger, the priest made another garland and adorned the Lord with it. When the king came, he saw a hair in the flower garland and asked the bhattar about it. The bhattar immediately told that it was the hair of the Lord and to protect the former from the king's anger, the Lord appeared with long hair the next morning. Hence he is also known as Sowrirajan.