The principal structures of the Tazumal group date to the Classic period (c. AD 250-900) of Mesoamerican chronology. By the Late Classic (c. AD 600–900) Tazumal was an important ceremonial complex. Construction activity is evident from the Early Classic through to the Middle Classic (c. AD 400–600). At this time Tazumal had important links with the Maya city of Kaminaljuyu in the Valley of Guatemala, which acted to extend the influence of the powerful central Mexican city of Teotihuacan into the Pacific coastal areas of Guatemala and El Salvador. During the Late Classic Tazumal had links with Copán in Honduras, as evidenced by architecture, sculpture and ceramics at Tazumal. The ceramic sequence at Tazumal continues uninterrupted from the Classic period through to approximately AD 1200. A number of Early Classic features indicate links with Chichen Itza, in the northern Yucatán Peninsula, or with Tula in central Mexico.