Duduma is about 92 km from Koraput and about 177 km from Visakhapatnam. It forms a part of the boundary between Andhra Pradesh and Odisha.
Duduma Waterfalls is one of the highest waterfalls in Southern India. Its waters support a large hydroelectric project called Machkund Hydro Electric Power Project located at 'Onukudelli'. Machkund is an important place for pilgrimage. The name Machkund derived from a pilgrimage point called 'Matsya Kunda'near the township of Paderu in Andhra Pradesh. A beautiful township called 'Onukudelli' has grown around this lovely place. The aboriginal tribe of 'Bondas' live near this waterfalls. It has two sub-waterfalls one on the Odisha side and the other on the Andhra Pradesh side. The waterfalls lie in picturesque surroundings. It is one of the best tourist spots in Southern India.