High Quality Content by WIKIPEDIA articles! Pre-Columbian Ecuador included numerous indigenous cultures, who thrived for thousands of years before the ascent of the Incan Empire. Las Vegas culture of coastal Ecuador is one of the oldest cultures in the Americas. The Valdivia culture in the Pacific coast region is a well-known early Ecuadorian culture. Ancient Valdivian artifacts from as early as 3500 BCE have been found along the coast north of the Guayas Province in the modern city of Santa Elena.