Llullaillaco appears to have been the most important Inca sacred mountain in the region. Archeological sites are also found in the valleys that drain Llullaillaco towards the Salar de Punta Negra, including the Quebrada Llullaillaco and the Quebrada de las Zorritas. The paths connect with the major north-south axis that runs between San Pedro de Atacama and Copiapo. This axis is associated with the extensive Inca road system.