Hillfort of El Castelón

The Castelón de Illano is a monumental complex in which, although it has never been archaeologically excavated, its powerful defences, moat and walls are visible, as well as the ruins of some constructions in the upper enclosure, characteristic castreño buildings with a simple ground plan and rounded corners, which were discovered in 1928 by Aurelio de Llano Roza de Ampudia.

The settlement was located on a slight projection halfway up the hillside and was separated from it by the excavation of at least one deep ditch that protected access to the inner enclosure. The entire perimeter of El Castelón is surrounded by a great wall that reaches a height of four metres and is in a surprisingly good state of preservation.

It is likely that it was founded in the Iron Age (4th-1st centuries BC) and survived until the Roman period (1st and 2nd centuries AD).