ago for Alumbrera and La Laguna. The older age appears to refer to a mesa just west of the Alumbrera lava field. The youngest age was obtained on Alumbrera cone by argon-argon dating: 37,000 ± 2,000. Historical activity is unknown, and in 1907 the volcanoes were considered to be extinct, but the field may have had eruptions during the Holocene; the young appearance of Alumbrera suggests a Holocene age for this cone. Renewed activity in the field could cause ash to fall over hundreds of square kilometres of adjoining land and generate dangerous pyroclastic density currents close to the vent. Other Between the Antofagasta and Alumbrera volcanoes lies the Antofagasta lake. The vegetation in the area is shrub steppe, and fairly sunny and dry. The Antofagasta River coming from the north forms a large wetland before the relatively deep Antofagasta lake; the Alumbrera volcano borders the lake in the south. A major archeological site is emplaced on the Antofagasta volcano. Gallery See also List of volcanoes in Argentina References Volcanoes of Argentina Mountains of Argentina Landforms of Catamarca Province Volcanic fields Four-thousanders of the Andes Puna de Atacama