he Black River Gorges is the largest national park in Mauritius. Famous for its waterfalls, vistas and hiking, the gorge is in the central highlands, making it cooler than much of the island. Hiking Trip - Black River Gorges Park - Half Day The “Black River Gorges” National park is a national park in the hilly south-western part of Mauritius. The park extends over an area of 6,754 hectares. With the help of the guides, you will discover Mauritius’ natural heritage in this unique area which is also the location of one of the rarest forests in the world. It harbors about 311 species of native and endemic flowering plants and 9 species of birds, which are found only in Mauritius