This was an old iron mine that was exploited in the early and mid-20th century.
Currently, there is an interpretation center that allows you to visit it and learn about its history and iron extraction. Visiting hours are at 10 a.m. and 12 p.m. and you can go from Tuesday to Sunday. To visit it, you must call 606 306 281 in advance.
You can find more information at: aliseda.es/mina-pastora