Burkina Faso is made up of two major types of countryside. The larger part of the country is covered by a peneplain. It has a gently undulating landscape with a few isolated hills. The southwest of the country forms a sandstone massif. The highest peak, Ténakourou, is found at an elevation of . The area is bordered by sheer cliffs up to high. The average altitude of Burkina Faso is . The difference between the highest and lowest terrain is no greater than . Burkina Faso is a mostly flat country.