MEXICO CITY.- Altars, plazas and ballgame courts, among other Prehispanic structures that are still buried at El Tajin, Veracruz may be detected by using LIDAR (Light Detection and Ranging) devises. Archaeologist Patricia Castillo Peña, academic director of the site in custody of the National Institute of Anthropology and History (INAH) informed that mapping the archaeological zone is a project that will allow to have detailed register of ancient structures. She commented that the initiative is being revised by the INAH Archaeology Council. In case of being approved, an agreement between INAH and Petroleos Mexicanos (PEMEX) will be set to determine the company with the LIDAR technology that may conduct the inspection, to be selected by PEMEX. The INAH researcher declared that extensive exploration took place in the northern and central regions of Veracruz as part of the PEMEX Gulf Tertiary Oil Project. Digital mapping of the a