Piton de la Petite Rivière Noire is the highest mountain on the island of Mauritius, in the Indian Ocean. Located in the Rivière Noire District and rising to a height of 828 m above sea level, it forms part of the Black River mountain range. There are two other main mountain ranges in Mauritius: Moka-Port Louis and Grand Port-Savanne. The Moka-Port Louis range includes Pieter Both and Le Pouce mountains, the second and third highest summits respectively.