 Prehistoric finds and an Iron Age enclosure (above Parkmill) show the area of "Parc le Breos" to have been settled by modern humans since the earliest times.The area that would become "Parc le Breos" has been inhabited by modern humans since the earliest times.The Cathole Cave – a steep, limestone outcrop, about from the floor of a dry narrow limestone gorge, now known as the "Parc le Breos Cwm" valley – has been used as a shelter by bands of Mesolithic hunters and as a Neolithic ossuary.