sentences:  It is heavily wooded with wooded savannas and gallery forests; it has the ambience of a park with its widespread vegetation of Khaya senegalensis, Daniellia oliveri and Isoberlin forests, tall grasses and savanna vegetation is also a dominant feature.Its human population distribution is low but the wildlife population is the second largest in the country.The area is drained by many rivers, the most important of them being the Black Volta (Mouhoun), the Red Volta (Nazinon), and the White Volta (Nakambé), which flow into Ghana on the south and form the Volta River.