According to it, every Tuesday merchants from Coimabatore came to this region to trade with the local tribals.
Then the people understood that the sisters were divine forms and built a temple for Goddess Kaliamman and Mariamman together.
A festival honouring the goddess is held in the temple annually, which is visited by thousands of devotees from across the country.
One of the important events in the festival includes devotees walking barefoot over burning coal to show their devotion to the goddess.
The devotees also make oil lamps from grounded rice and offer them to the goddess.