The Wonder Cave of Nellitheertha, located to the right of the temple, offers a unique spiritual experience. After traversing around 200 meters inside, devotees can take a holy dip in the sacred lake, believed to have healing properties, especially for skin ailments, before performing abhishek to the Shivalinga. A natural marvel, water continuously drips in the shape of amla (gooseberries), giving the cave its name, Nellitheertha. The cave is open for exploration by all, regardless of caste or creed, with access allowed for only six months each year, from Dhanur Sankranti (October 17) to Mesha Sankranti (April 14).