An interesting spot to keep in mind while visiting the temple is a cave to the right (North) corner of the lake.

It was at this place where Divakara Muni Vilwamangalam, the great Brahmin sage, did penance and performed poojas.

Humiliated, the boy disappeared from there after proclaiming that if Vilwamangalam wants to see him he would have to go to Ananthankat, the forest of serpent god Anantha.

Immediately the tree fell down and assumed the shape of Lord Vishnu lying on a thousands hooded serpent.

The temple is unique in its structural aspects for it is erected in the middle of an impressive lake of 302 feet.

The sreekovil (sanctum sanctorum), Namaskara-mandapam, Thitappalli, and shrines of Jala-Durga and the entrance of the cave are located in the lake.

One of the key features of the temple is that the original idols in the sanctum sanctorum were not made of metal or stone, but of a rare combination of more than 70 medicinal materials called `kadu-sharkara-yogam.'

The District Tourism Promotion Council has plans to preserve the temple and its surroundings for its uniqueness.

It is believed that it ate only temple offerings that were served to her twice a week and never harmed a single human.On November 2023, a new crocodile was spotted in the lake as a miracle.

It refrained from hunting fish and appeared to be content with the occasional temple offering left for it.