Mula Ganga is a water reservoir (well) located in the Kanyakumari Temple in Tamil Nadu. When Devi
Kanyakumari annihilated the demon Banasura, Devas came to the seashore, the
site of the battle, to felicitate Goddess on her victory. But Devas could not
find fresh water to pour over the Devi. There was no fresh water in the
vicinity and they could not use the salt sea water.
Goddess Kanyakumari then threw down her spear which split
the earth a great fountain of water gushed out from the seven Patalas and
covered the earth. The flood alarmed the gods and human beings.
They asked Goddess to save them. She then made a huge hole
on the spot and contained the water in it and the water never overflowed. This well
was named the Mulgaganga.
The Mula Ganga is located in the second Prakaram (inner
courtyard) of the temple. Water from it is used during the abhishekam ritual
for deities worshipped in the temple.