Rock Formation:
The exposed rock is located in the headwaters of the river and consists of gray to black colored andesite lava with a porphyritic, hypocrystalline, inequigranular texture, a sheeted dyke structure, and mineral composition of plagioclase, pyroxene, amphibole, and a microlitic plagioclase and volcanic glass matrix. In the waterfall area, the rock is composed of autobreccia with a gray to black appearance, block-shaped and composed of andesite, formed by the cooling of lava on the surface.
Natural Landscape:
A waterfall with a height of approximately 20 m in the Cilangkahan river flow. The waterfall is located in the Endut Volcano rock unit.