Sathyamangalam, historically known as Satyamangalam or simply Sathy, is an ancient gateway town and taluk in the Erode district. Situated at the foothills of the Western Ghats where the Bhavani River emerges onto the plains, its history is one of the most dramatic in southern India.
​Sathy's strategic location at the base of the treacherous Gajajalhatti Pass—the historical mountain highway connecting the Mysore plateau to the Tamil plains—turned it into a coveted prize fought over by ancient tribal chieftains, imperial Tamil dynasties, the Kingdom of Mysore, and the British East India Company.