Aguateca is a Maya site located in northern Guatemala's Petexbatun Basin, in the department of Petén. The first settlements at Aguateca date to the Late Preclassic period (300 BC - AD 350). The center was occupied from about 200 B.C. until about 800 A.D., when the city was attacked and ransacked. Because the city was rapidly abandoned by its population, Pompeii-style assemblages were left scattered on the floors of elite residences. Horizontal excavation of these residences has revealed ancient elite activity and household level craft production areas. Aguateca sits on top of a 90 metres (300 ft) tall limestone bluff, creating a highly defensible position. This steep escarpment overlooks Petexbatun Lagoon in the Southwestern Guatemalan lowlands and is accessible by boat. There is an extensive system of defensive walls that surrounds the city, reaching over 3 miles (4.8 km) in length. Its center consisted on the Palace Group, which was probably a royal residential compound, and the Main Plaza.