Ledok Amprong is located at the hillside of Semeru Mountain with current speed 10 -- 30 KM/hour. Follow the river by joining this tubing activites to pump your adrenaline. This activities are safe for everyone as long as you're in a good health condition and without any serious injuries. The heavy current will bring you along the river exploring the beauty of Semeru's nature with double fun. Hold on tight to the tire and try not to fall, but you will fall anyway, so just let it flow!