The southern border of the park is roughly defined by the Mora Diphlu river. Further south are the hills of Barail and the Mikir. The National Highway NH-37 was once the formal southern boundary of the park.
The southern border of the park follows the Mora Diphlu river closely. To the south lie the Barail hills and the Mikir area. Historically, the National Highway NH-37 served as the formal southern limit of the park.