The economical activities of the first inhabitants of this area, the San Francisco aboriginal group, were hunting and collecting fruit.
During the spanish occupation, the main activities were minng and cattle raising.
Sugar industry started at the begining of this century, turning the transition jungles in the flatlands into crop field.
In 1979, the Ledesma sugar company donated land for the creation of Calilegua National Park.
The Park has a great difference in height due to is location on the mountain slope. This causes a great difference in rainfalls: around 800 mm. at the lowest areas, up to 1800 mm. in the high mountain jungles.
The winters are dry and mild, with an average temperature of 17º C. It often snows on the hilltops between june and september. The summers are hot, with maximum temperatures above 40º c. The rain season is fron November to April.
This jungle goes from the mountain base, at 450 m. above sea level, to the mountain tops, above 3600 m.high. This difference in height produces great variety in the types of vegetation, which grow in noticeably different communities, although the transition from one to the other is gradual.
Calilegua offers a an only environment of tropical rain forest with the largest biodiversity in Argentina.
San S. de Jujuy