 Rains occur from the moist trade winds generated in the Tortola's mountains and falls mostly on the northern side of the park, supporting a few forest species, while the southern part of the park reflect old pastures of dry forests.A small area of , which is generally of rocky terrain, retains the original forest species as they could not be cleared for agriculture.Tree plantations already existed, with the plantations of West Indies Mahogany and White Cedar.