Ireland; Co. Mayo; archeological grounds of C閕de Fields: view of Visitor Centre in form of a pyramide and food path to rear entrance. C閕de Fields is a signature discovery point at Wild Atlantic Way (WAW) and a hot spot of irish archeology. C閕de Fields; Irish Achaidh Ch閕de; meaning "flat topped hill fields"; is the biggest neolithic site in Ireland and and contains the oldest known field systems in the world. Start of the development of C閕de Fields dates back to around 3500 BC (BCE). Discovery happened by chance. In the 1930s; the local school teacher Patrick Caulfield noticed piles of rocks and sent a letter concerning his discoveries to the National Museum in Dublin. But the unravelling of the area happeend only forty years later. His son Seamus Caulfied; having studied archaeology; did the investigation and discovered a complex of fields; houses and megalithic tombs concealed by the growth of blanket bogs over the course of many centuries. The ensuing excavation of habitation sites and tombs reveals the way of life of people living 200 generations ago. They were a large community of farmers who cleared hundreds of acres of pine forests; pollen from pine trees being present in the peat. There may have been even cattle farming. All ended after a very prosperous period of no more than 500 years. The visitor Centre of C閕de Fields is also a museum and runs guided tours through the area.