[2] The crater was formed less than 2 million years ago in the second phase of volcanic activity that created Mauritius.

[3] According to experts, the volcano is currently dormant but could become active at any time within the next thousand years.

Currently, the only mammals living on the volcano are the long-tailed macaque (Macaca fascicularis) and the fruit bat (Pteropus niger).

Lots of exotic birds are found here, including the red fody (Foudia madagascariensis), but the endemic bird species are the martin (Phedina borbonica) and the swiftlet (Aerodramus francicus).

When it erupted long ago, it created the valleys of La Vallee des Couleurs Nature Park.

While going to Nicoliere reservoir, on your left you will see Mt William, a dead volcano.

A forest is found next to the crater, where there are lots of exotic Psidium cattleianum.

From Mont Bar le duc, you can easily see Alma hill.

Next to Mare aux Vacoas reservoir, Trou de Mme Bouchet is extinct.

Like Trou de Mme Bouchet, it is next to Mare aux Vacoas reservoir.

Near Mare aux Vacoas, it is in the Domaine des 7 Vallees Nature Reserve.