On 3 June 2020, researchers published an article in ''Nature'' describing their discovery of the oldest and largest Maya site, known as Aguada Fénix, in Mexico. It features monumental architecture, an elevated, rectangular plateau measuring about 1,400 meters long and nearly 400 meters wide, constructed of a mixture of earth and clay. To the west is a 10-meter-tall earthen mound. Remains of other structures and reservoirs were also detected through the Lidar technology. It is estimated to have been built from 1000 to 800 BC, demonstrating that the Maya built large, monumental complexes from their early period.