Tangkahan is a small village on the border of Gunung Leuser National Park located in North Sumatra. It is situated at the junction of 2 rivers, the Buluh River and the Batang River. Tangkahan specialises in eco-tourism activities like jungle trekking and Elephant trekking. There are 7 trained elephants at Tangkahan which are available for jungle trekking though their primary role is to patrol and protect the National Park from illegal activities like animal poaching and illegal logging. These elephants were original troublesome elephants that were involved in destroying fields and houses in surrounding villages. Now they serve to protect not only the villages but other elephants in the wild.