The Sierra Norte, known as La Sierra Juarez, is a mountain range that runs parallel to the Gulf of Mexico, from the State of Nuevo Leon and as it narrows forms the waist of the nation in Oaxaca, almost joins with the Sierra Sur, mountain chain which runs down from Alaska parallel to the Pacific Ocean and in Oaxaca is called "Mixtec knot".

The northern Sierra of Oaxaca is an exceptional place. A real niche, not only ecological and natural beauties, but mainly by its human and cultural wealth. But one of the unsurpassable "jewels" of this corner of the State is without a doubt Capulalpam de Mendez.

In the heart of the Sierra Norte of Oaxaca, there is a small town where the West Sierra Madre joins the Easter Sierra Madre, also known as "Mixtec knot".

Under the auspices of the Institute of graphic arts of Oaxaca, the library for the blind "Jorge Luis Borges" project has been developed, says Freddy Aguilar, especially since Oaxaca is a State with numerous cases of blindness and there is very little attention from the education authorities.