Most of the archaeological sites in western El Salvador such as Lago de Guija and Joya De Ceren indicate a pre-Columbian Mayan culture. Cihuatan shows signs of material trade with northern Nahua culture, eastern Mayan and Lenca culture, and southern Nicaraguan and Costa Rican indigenous culture. Tazumal's smaller B1-2 structure shows a talud-tablero style of architecture that is associated with Nahua culture and corresponds with their migration history from Anahuac. In eastern El Salvador, the Lenca site of Quelepa is highlighted as a major pre-Columbian cultural center and demonstrates links to the Mayan site of Copan in western Honduras as well as the previously mentioned sites in Chalchuapa, and Cara Sucia in western El Salvador. An investigation of the site of La Laguna in Usulutan has also produced Copador items which link it to the Lenca-Maya trade route.