Map No. 170, the Vale of Glamorgan/ Bro Morgannwg, in the waterproof & tear-resistan OS Active version of the Ordnance Survey Landranger series at 1:50, 000 including Rhondda, Porthcawl, Port Talbot, Neath/ Castell-Nedd, Treherbert, Maesteg, Pontycymer, Tonypandy, Pontypridd, Bridgend/ Pen-y-Bont ar Ogwr, Cowbridge/Y Bont-Faen, Aberdare/ Aberdar, Mountain Ash/ Aberpennar, Treorchy/ Treorci, Rhoose/Y Rhws, Llantwit Major/ Llantwit Fawr, Ogmore-by-Sea, Pyle/Y Pil, Pencoad, Llantrisant, Aberkenfig, Bettws, Margam, Cwmafan, Baglan, Croeserw, Glyncorrwg, Tonna/ Tonnau, Resolven/ Resolfen, Birchgrove & Pontardawe, with the Swansea Bay/ Bae Abertawe, the Bristol Channel/ Mor Hafren with the Tusker Rock, & the Eglwys Nunydd Reservoir. Edition D4; Publication date April 2012 About Ordnance Survey