Mangala Devi Kannagi temple is a historic temple placed inside the Idukki district of Kerala bordering Tamil Nadu, approximately 7 km from Pazhiyankudi in Theni district and 15 km from Thekkady in Idukki district. Cheran Chenguttuvan, the king of historical Tamilakam, had erected the temple for Kannagi round 2000 years lower back at Vannathiparai and called it 'Kannagi Kottam' or 'Mangaladevi Kannagi temple' and executed everyday pujas.
It sits at an altitude of about 1,337 m above the imply sea degree. It is surrounded by lush greenery and is closed throughout the year besides for the duration of the Chitra Pournami competition. At different times travelers can nevertheless view it by getting a special letter from the forest ranger. The view from the temple premises is wonderful and you will see part of eastern ghats and a few villages from adjacent country of Tamil Nadu. As used in many parts of South Asia, the time period ghat refers to a series of steps main all the way down to a frame of water, specially a holy river.