Explore details about location Gwalch Y Penwaig. Gwalch Y Penwaig is a location situated within the Vale of Glamorgan alongside other areas such as Upper Cosmeston Farm, Plas Pamir, Cogan Pill Road. Additionally, some smaller parts of Gwalch Y Penwaig include specific areas like Ffordd y Mileniwm, The Promenade adding to the diversity of its landscape.