The Tehuacán-Cuicatlán Valley is part of the Balsas Region and Interior Oaxaca Endemic Bird Area (EBA). The Tehuacán-Cuicatlán Valley is an exceptional example of a long process of adaptations and ancient technological evolution that defined the cultural region known today as Mesoamerica. The Tehuacán-Cuicatlán Valley: originary habitat of Mesoamerica is an invaluable and irreplaceable heritage of humanity. Criterion (x): The Tehuacán-Cuicatlán Valley demonstrates exceptional levels of biological diversity in an arid and semiarid zone in North America. Protection and management requirementsThe property Tehuacán-Cuicatlán Valley: originary habitat of Mesoamerica has effective legal protection to ensure the maintenance of its Outstanding Universal Value.