Hogenakkal is a waterfall in South India on the Kaveri river in the Dharmapuri district of the Indian state of Tamil Nadu. It is located 180 km (110 mi) from Bangalore and 46 km (29 mi) from Dharmapuri. Sometimes referred to as the "Niagara Falls of India," it is known for medicinal baths and hide boat rides, projecting itself as a major tourist attraction. Carbonatite rocks in this site are considered to be the oldest of its kind in South Asia and one of the oldest in the world. The Government of Tamil Nadu made a proposal to convert the falls into providing drinking water for the state. The Kaveri is considered to form at Talakaveri in the Brahmagiri hills in the Western Ghats of south India and gathers momentum as the land drops in elevation. It becomes larger as various tributaries feed into it on the way down.[2] At Hogenakkal, the Kaveri, now a large river, drops and creates numerous waterfalls as the water cuts through the rocky terrain. In places the water falls as much as 20 m (66 ft) and is said to sound like continual thunder.[citation needed] Soon after the falls the river takes a southerly course and enters the Mettur Stanley Reservoir.