சித்த பிரம்மையை சீர்படுத்திய தொண்டனூர் ஏரி Medicinal Thondanoor Lake 

The lake designed by Ramanujar is said to have medicinal properties......
Nestled in picturesque environs, the lake area encompasses the Tipu Caves, the Padmagiri hillock with its turtle rock that is much sought after by rock climbers, and Ramanuja Gange, a small waterfall. The lake, a vast expanse of water, it is believed was designed and built as a gorge between rocky hills, under the guidance of Ramanujacharya who named it Tirumalasagara. The lake, it is claimed, has medicinal properties and that its water has never dried up since its creation, even in severe drought conditions.
Read more at: www.deccanherald.com/content/...
The local king Bitti Deva was unhappy over the plight of his daughter who was possessed of an evil spirit. Neither medicine nor mendicants could heal. Sri Ramanuja healed her problems through this water source.
Unique idol We climb over a dozen steps to reach the Narasimha Temple. Legend has it that the idol of Narasimha was installed in the Tretha Yuga by Prahalada, a steadfast devotee of Vishnu. We see a rare image of Ramanujacharya here.
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