Being part of the Sierra Madre Oriental, La m or the "eme" (the pronunciation of the letter "m" in Spanish) is a figure located on top of the mountain chain, in the state of Nuevo León

Nuevo León

Nuevo León It is located in Northeastern Mexico. It is bordered by the states of Tamaulipas to the north and east, San Luis Potosí to the south, and Coahuila to the west. To the north, Nuevo León has a 15 kilometer stretch of the U.S.-Mexico border adjacent to the U.S...

, México

Mexico

The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

.

The rock figure is visible from various parts of the city of Monterrey

Monterrey

Monterrey , is the capital city of the northeastern state of Nuevo León in the country of Mexico. The city is anchor to the third-largest metropolitan area in Mexico and is ranked as the ninth-largest city in the nation. Monterrey serves as a commercial center in the north of the country and is the...

, including neighbouring cities, like San Nicolás de los Garza

San Nicolás de los Garza

San Nicolás de los Garza, sometimes known only as San Nicolás, is a city and coextensive municipality in the Mexican state of Nuevo León that is part of the Monterrey Metropolitan area. It has become primarily a city for residencies and family houses, although it still has several factories that...

 or Guadalupe

Guadalupe, Nuevo León

Guadalupe is a city and surrounding municipality located in the state of Nuevo León, in northern Mexico. It is part of the Greater Monterrey Metropolitan area....

 and San Pedro Garza García

San Pedro Garza García

San Pedro Garza García is a city-municipality of the Mexican state of Nuevo León and is part of Monterrey's Metropolitan Area, based on the suburban North American model...

, which is the municipality established on the base of the mountain.

Some other known mountains or elevations of the zone are the Cerro de las Mitras

Cerro de las Mitras

Cerro de las Mitras , named for its distinctive miter-shaped structures at the very top viewed from the northern side, is another symbol of the landscape of the state of Nuevo León, Mexico. Located in the cities of Monterrey, Santa Catarina and García....

, Cerro del Topo Chico

Cerro del Topo Chico

Cerro del Topo Chico is an inactive volcano located in the western portion of the city of San Nicolás de los Garza and within the northern limits of the Monterrey metropolitan area .The gray areas depicted on the photos are limestone quarries from which raw material is extracted to manufacture...

, Cerro del Obispado

Cerro del Obispado

The Cerro del Obispado is a famous landmark in the city of Monterrey, Mexico, named after the building constructed in the middle of the hill by the end of the 18th century....

, Cerro de la Loma Larga

Cerro de la Loma Larga

Cerro de la Loma Larga , or Loma Larga located in the Monterrey, Nuevo León metropolitan area is a lower extension of the Sierra Madre Oriental, in particular an eastern extension of Cerro de las Mitras.The hill has long been considered the natural division of the now adjacent cities of Monterrey...

 and La Huasteca.