Krishnagiri (கிரிஷ்ணகிரி) is a municipal city and the headquarters of Krishnagiri District in the Indian state of Tamil Nadu. It is a part of Kongu Nadu region of Tamilnadu ruled by the ancient Western Ganga Dynasty.See also Gounder (caste) for history. Mango is cultivated as the main crop and its considered as the birth place for Mangoes. Geography Krishnagiri is located at . It has an average elevation of 631 metres… (More on Krishnagiri)