Channagiri has a hill fort of about 1770 A.D. with a Ranganatha temple inside it, which rises to a height of about 200 feet to the west of the town consists of a single soft dark covered with earth which commands a wide plain.
The Sarangapani temple at Kumbakonam is mentioned in place of Vatarangam in some references.
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Ranganātha (Tamil: அரங்கநாதர், Sanskrit : रंगनाथ) also known as Sri Ranganatha, Aranganathar, Ranga and Thenarangathan is a Hindu deity, more well known in South India, and the chief deity of the Sri Ranganathaswamy Temple, Srirangam.
It is called Bete-Ranganatha and depicts Vishnu standing in samabhanga holding chakra and sankha in his back hands and arrow in his front hands with a low Garuda pedestal below him and a consort in relievo on the prabhavali on each side.
In the Srirangam Ranganatha Swamy temple, along with the goddess Ranganayaki, one can also find, just behind her, Bhooma Devi and Sri Devi, in sitting posture.