Ajusco is a lava dome

volcano A volcano is commonly defined as a vent or fissure in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most oft ...

located just south of

Mexico City Mexico City is the capital city, capital and List of cities in Mexico, largest city of Mexico, as well as the List of North American cities by population, most populous city in North America. It is one of the most important cultural and finan ...

, Mexico, in the Tlalpan borough of the city. It is the highest point in the city.

Etymology

Ajusco is a Náhuatl word variously translated as "source of waters" or "watered grove", and the Lerma River and

Balsas River The Balsas River (Spanish Río Balsas, also locally known as the Mezcala River, or Atoyac River) is a major river of south-central Mexico. The basin flows through the states of Guerrero, México, Morelos, and Puebla. Downstream of Ciudad Alt ...

draw some of their source waters from this area. Also, the flow from all of the remaining strong springs in the area adjacent to the peak are captured to augment Mexico City's water supply.

Geology

Ajusco is a lava dome complex of

Pliocene The Pliocene ( ; also Pleiocene) is the epoch (geology), epoch in the geologic time scale that extends from 5.33 to 2.58Pleistocene The Pleistocene ( ; referred to colloquially as the ''ice age, Ice Age'') is the geological epoch (geology), epoch that lasted from to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fin ...

age, surrounded by block and ash flow deposits. Ajusco is part of the mountain chain of volcanic origin known as Sierra de Ajusco-Chichinauhtzin, among which Xitle (), Tláloc (), Pelado (), Cuautzin () and Chichinautzin () stand out. This range is part of the

Trans-Mexican Volcanic Belt The Trans-Mexican Volcanic Belt (), also known as the Transvolcanic Belt and locally as the (''Snowy Mountain Range''), is an active volcanic belt that covers central-southern Mexico. Several of its highest peaks have snow all year long, and dur ...

which crosses central Mexico and contains the country's highest peaks.

Ecology

Parts of this range account for about half of the area of the

Mexican Federal District Mexico City is the capital city, capital and List of cities in Mexico, largest city of Mexico, as well as the List of North American cities by population, most populous city in North America. It is one of the most important cultural and finan ...

, the rest of which is occupied by Mexico City. The area is important for conservation of local ecosystems. In its oak, pine and fir forests there are unique endemic species like the teporingo rabbit and the volcano mouse.

Sites of interest

The area around the peak is a popular destination for residents of Mexico City and tourists, with activities such mountain biking, horseback riding, motorcycling, hiking and climbing. The area is one of the few around Mexico City where it may snow in the winter. This mountain offers views over the Valley of Mexico (weather and pollution permitting), including the city and its skyscrapers, Popocatepetl, Iztaccihuatl and Nevado de Toluca volcanoes, and parts of the Valley of

Cuernavaca Cuernavaca (; , "near the woods" , Otomi language, Otomi: ) is the capital and largest city of the Mexican state, state of Morelos in Mexico. Along with Chalcatzingo, it is likely one of the origins of the Mesoamerica, Mesoamerican civilizatio ...

. The Ajusco area is also home to Six Flags México (the largest amusement park in Latin America), the TV Azteca television network, the National Pedagogic University, the UNAM radio transmission center, the Fondo de Cultura Económica and

El Colegio de México El Colegio de México, A.C. (commonly known as Colmex, English: The College of Mexico) is a Mexican institute of higher education, specializing in teaching and research in social sciences and humanities. The college was founded in 1940 by the Me ...

. Atop the volcano is a pre-Hispanic site where artifacts have been discovered.

References

External links

Chichinautzin volcano
* {{Authority control Geography of Mesoamerica Mountains of Mexico Volcanoes of Mexico City Landforms of Mexico City Pliocene lava domes Pleistocene lava domes North American 3000 m summits