been adopted by Ch'orti' and Poqomam Mayan people during the Pipil exodus in the 9th century CE. The culture lasted until the Spanish conquest, at which time they still maintained their Nawat language, despite being surrounded by the Maya in western El Salvador. By the time the Spanish arrived, Pipil and Poqomam Maya settlements were interspersed throughout western El Salvador. The Pipil are known as the last indigenous civilization to arrive in El Salvador, being the least oldest and were a determined people who stoutly resisted Spanish efforts to extend their dominion southward. The Pipil are direct descendants of the Toltecs, but not of the Aztecs. Evidence of Olmec civilization presence in western El Salvador can be found in the ruin sites of Chalchuapa in the Ahuachapan department. Olmec petroglyphs can be found on boulders in Chalchuapa portraying Omlec warriors with helmets identical to those found on the Olmec colossal heads. This suggest that the area was once an Olmec enclave, before fading away for unknown reasons. The Olmecs are believed to have lived in present-day El Salvador as early as 2000 BC. The 'Olmec Boulder, ' is a sculpture of a giant head found near Casa Blanca, El Salvador site in Las Victorias near Chalchuapa. "Olmecoid" figurins such as the Potbelly sculpture have been found through this area, in fact most are described as looking primeval proto-Olmec. Modern Native American people According to the Salvadoran Government, about 0.23% of the population are of full indigenous origin. The largest most dominant Native American groups in El Salvador are the Lenca people, Cacaopera people, Maya peoples: (Poqomam people/Chorti people) and Pipil people. The number of indigenous people in El Salvador have been criticized by indigenous organizations and academics as too small and accuse the government of denying the existence of indigenous Salvadorans in the country. According to the National Salvadoran Indigenous Coordination Council (CCNIS) and CONCULTURA (National Council for Art and Culture at the Ministry of Education), approximately 600,000 or 10 per cent of Salvadorian peoples are indigenous. Nonetheless, very few natives have retained their customs and traditions, having over time assimilated into the dominant Mestizo/Spanish culture. The low numbers of indigenous people may be partly explained by historically high rates of old-world diseases, absorption into the mestizo population, as well as mass murder during the 1932 Salvadoran peasant uprising (or La Matanza) which saw (estimates of) up to 30,000 peasants