El Paso is located within the Chihuahuan Desert, the easternmost section of the Basin and Range Region. The Franklin Mountains extend into El Paso from the north and nearly divide the city into two sections; the west side forms the beginnings of the Mesilla Valley, and the east side expands into the desert and lower valley. They connect in the central business district at the southern end of the mountain range.
The city’s elevation is 3,800 ft (1,200 m) above sea level. North Franklin Mountain is the highest peak in the city at 7,192 ft (2,192 m) above sea level. The peak can be seen from 60 mi (100 km) in all directions. Additionally, this mountain range is home to the famous natural red-clay formation, the Thunderbird, from which the local Coronado High School gets its mascot’s name. According to the United States Census Bureau, the city has a total area of 256.3 square miles