Brazil is the longest country in the world, spanning 4,395 km (2,731 mi) from north to south. Brazil is also the only country in the world that has the equator and the Tropic of Capricorn running through it. Brazilian topography is also diverse and includes hills, mountains, plains, highlands, and scrublands. Much of the terrain lies between and in elevation. The main upland area occupies most of the southern half of the country. The northwestern parts of the plateau consist of broad, rolling terrain broken by low, rounded hills.