Curug Nangsi, or also called Curug 3 in 1 (three-in-one), is a waterfall located in Lebak Nangsi, Sukamukti village, Waluran Sub-District. The walls of this waterfall consist of sandstones from the Bentang Formation which was formed around 23-16 million years ago (Lower Miocene). The name Nangsi comes from the name of the area itself. The name Curug 3 in 1 is given by local residents because there are 3 waterfalls in close proximity, namely Curug Cibenda, Curug Cikupa and Curug Nangsi. Access to the waterfall from Nangsi Village must be taken on foot through a footpath in a rice field embankment.