The terrain of Nigeria features inland hardwood forests, swamps, mangrove forests, river valleys, plateaus and a large savannah. The savannah is divided into three zones: Sahel savannah, Guinean forest-savannah and Sudan savannah. The largest region in Nigeria is the Niger and Benue river valleys, which come together to form a "Y" shape.
Nigeria is a West African country that borders Cameroon, Chad, Niger and Benin. Its capital is Abuja. The highest point of Nigeria is Chappal Waddi, which extends 7,936 feet above its lowest point, the Atlantic Ocean. The country's highest plateau, the Mambilla Plateau, extends to the Cameroon border. Mountains and hills can be found within this plateau.