Peñarroya volcano Nature · Alcolea de Calatrava, Campo de Calatrava, Ciudad Real Image of Alcolea de Calatrava, not of the place itself. A volcanic edifice in the municipal district of Alcolea de Calatrava declared a Natural Monument by the regional government of Castilla-La Mancha, one of the best preserved in the volcanic region of the Campo de Calatrava. Photo: PePeEfe (CC BY-SA 3.0) What to see and do in Alcolea de Calatrava