The North Wales Coalfield comprises the Flintshire Coalfield in the north and the Denbighshire Coalfield in the south. It extends from Point of Ayr in the north, through the Wrexham area to Oswestry in Shropshire in the south. A much smaller area on Anglesey where coal was formerly mined is not usually considered to form a part of the coalfield, although it is geographically in the North Wales region.