River wdesign February 9, 2021 April 2, 2022 Petanu / Tungkang River Petanu River & Tungkang River Petanu is a river located in Goa Gajah Area, Gianyar regency, Bali, Indonesia. The river cosmologically flows from the hills of Kintamani. It has an ±96.87 km² with a river length of 46.96 km