de Moro. Cerro Chepén has a sophisticated system of fortifications, and a dominant position on top of the hill, with many monumental buildings. Recent excavations at the site revealed that there was much internal conflict there that affected local communities. Archeological sites Some of the archeological sites in La Libertad Region are: Chan Chan El Brujo Huaca del Sol Huaca de la Luna Marcahuamachuco Pakatnamu Pirqa Pirqa San José de Moro Huaca Santa Clara Wiraquchapampa Archeological Complex Caballo Muerto Places of interest Calipuy National Sanctuary Ecological regions Water supply and sanitation The public company for water supply and sanitation in La Libertad Region is SEDALIB which is formed by shareholders of municipalities of the Region. Culture Festivals and events Spring Festival Marinera FestivalInternational Calzaferia El Porvenir it is a fair of footwear and in 2012 took place the 10th edition; it is held in El Porvenir city.Regional Fair of the Pineapple''' it is held in the town of Poroto. Virgin of La Puerta Patronal Feast, the celebration originated in 1664 when it placed the image of the Virgin at the entrance of Otuzco as precaution of the risk of a pirate raid. The main day is celebrated on December 15 every year and in 2012 the feast of Our Lady of the Gate was declared a National Cultural Heritage by the Peruvian government. Contradanza, expression cultivated in Huamachuco city, in the villages Urpay, Shiracmaca and Culicanda. This dance in 2012 has been declared a National Cultural Heritage by the Peruvian government See also Chimú culture Moche Cupisnique Marcahuamachuco 1970 Ancash earthquake References Regions of Peru Cupisnique culture