POTENSI OLAHRAGA DAYUNG DI SUNGAI BATANGHARI JAMBI THE POTENTIAL OF KAYAKING SPORT IN THE RIVER OF BATANGHARI JAMBI ROLI MARDIAN ABSTRACT The river of Batanghari as known as the longest river in Sumatra Island, it is looks like “cutting” Sumatra island and almost make Sumatra island become two part in case we take a look it from upper course to lower course. The river of Batanghari size…