The river Pekalen springs at Mt. Argopuro and Mt. Lamongan south of Probolinggo in East Java. The rafting-track at the lower part of the river comprises 9 km, while a 12 km track upstream with about 50 rapids can be found. Its width is 5 to 20 m with a depth varying between 1 and 3 m. Its level of difficulty is 2 - 3+. Splendid waterfalls will be greeting you, and if one has time to look around, interesting animals are welcoming you. Check it out.