sentences:  The Arli National Park, covering an area of , lies to the southwest of Arli–W–Singou complex.It borders with Benin (the Pendjari River forms the boundary) and Singou Game Ranch on its northwest direction and has large network of drainage system which has vast flood plains.Within the park boundary, the Falaise de Gobnangou is a prominent hill feature with cliffs that extends over from the southwest to the northeast.