Elevation (feet): 22,058
Elevation (meters): 6,723
Continent: South America
Country: Argentina
Range/Region: Central Argentina-Chile
Latitude: -24.7167
Longitude: -68.55
Difficulty: Scramble
Best months for climbing: May, Jul, Aug, Sep, Oct
Volcanic status: Dormant
Nearest major airport: Antofagasta, Chile, (via Santiago)
Convenient Center: Socompa (border post)

Llullaillaco is the sixth highest mountain in South America. It is the high peak in a large area of high volcanic land rising in the widest stretch of the Altacama desert. Its aridity and remoteness make it a difficult mountain to approach, but the ascent of its gently sloping cone is otherwise straightforward. A winter ascent is recommended because snow may be the only source of water. Like many of the mountains in the area, its summit holds the ruins of several Incan shelters.