MEXICO CITY Archeologists in Mexico have discovered a huge, lost Mayan city, which they named Valeriana, hidden deep in the southern jungle of Campeche, a sprawling, urban settlement, replete with architectural marvels and agricultural infrastructure. The discovery of what appears to have been a bustling urban landscape challenges the existing knowledge about the prevalence and density of ancient Mayan settlements. Valeriana was discovered by chance thanks to Lidar, or Light Detection and

Tag-uri: Agricultura