Two mountain ranges (Sierra Madre Occidental and Sierra Madre Oriental) traverse Mexico from north to south.
These are the annexes of the Rocky Mountains in the northern part of North America. The Sierra Nevada, also referred to as the Trans-Mexican Volcanic Belt, traverses the country from east to west in the middle. The Sierra Madre del Sur, another mountain range, extends from Michoacán to Oaxaca.
To its north, the country shares a border of 1,952 miles (3,141 km) with the United States. The winding Río Bravo del Norte (called as the Rio Grande in the U.S.) river demarcates the boundary from Ciudad Juárez, east to the Gulf of Mexico.
A Mexico physical map demonstrates that a succession of natural and man-made frontiers define the boundary between Mexico and the U.S.- west from Ciudad Juárez to the Pacific Ocean.
Essentially, most of the northern and central areas in Mexico are situated at high elevations. Areas with the maximum altitudes are noticed at the Trans-Mexican Volcanic Belt: Popocatépetl (5,462 meters, 17,920 feet), Pico de Orizaba (5,700 meters, 18,701 feet), the Nevado de Toluca (4,577 meters, 15,016 feet) and Iztaccíhuatl (5,286 meters, 17,343 feet). Three important metropolitan settlements are situated in the basins amid these four summits: Greater Mexico City, Toluca, and Puebla.