Las Cogotas
The site of Las Cogotas was researched in the 1920s, and contains remains from both the Bronze and Iron Ages. The expression ‘a pile of rocks’ springs to mind.
In the nearby village of Cardeñosa there is a visitors’ centre, which wasn’t open, next to the church, which wasn’t open, and a rather nice bakery, which was.
It might be different when you visit.