sentences:  Petén Basin
  
  The Petén Basin is a geographical subregion of Mesoamerica, primarily located in northern Guatemala within the Department of El Petén, and into Campeche state in southeastern Mexico.During the Late Preclassic and Classic periods of pre-Columbian Mesoamerican chronology many major centers of the Maya civilization flourished, such as Tikal and Calakmul.