Caolan River originated in Chiayi County Dapu Township Sanmin Township, Kaohsiung County in the mountains at the junction of the water sent into the mountains, not many people know, still wears a cloak of mystery, full of original natural flavor. Sediment control dams, Tsengwen cut into Sec, dozens of meters high and the gap, the formation of two layers of spectacular artificial waterfall, waterfall in the Caolan River with Tsengwen will long jump drawbridge by Caolan River sediment retention dam see more waves of momentum, more distant valley tortuous extension, it can not help but praise the wonders of nature.