Past and present Geomorphological hazard and cultural heritage loss in El Castellar castle scarp (central Ebro Basin, Spain)

The ruins of the Medieval castle and village El Castellar are located on an abrupt 1.2-km-long scarp Miocene gypsums, in central sector Ebro depression. remains main perched a 100 m cliff River. Considering historical geoarchaeological relevance settlement, this investigation aimed to study geomorphological paleoenvironmental context site during after settlement its later evolution, including current state. Geomorphological data suggest that times constructions were favored by MCA environmental conditions. During times, River was centered position floodplain, lateral alluvial fans protected from basal erosion. Later, LIA, great climatic flows recurrent floods changed river dynamics promoted channel movement against scarp, destabilizing foot generating large landslides rockfalls, thus promoting retreat. buildings at top seriously damaged. For several reasons, area is not easily accessible, but it still contains relevant archaeological heritage deserves be studied preserved.