Canvas Print of Dunraven Bay Sunset on an October Evening. Also sometimes known as Southerndown Bay or Beach, this lovely bay is one of the best on the Glamorgan Heritage Coast in south Wales near Southerndown. Because of its popularity it can be a little crowded in season. But out of season you can almost have the beach to yourself. Then you can appreciate it. The beach is both rocks and sand with tall cliffs to either side. The tide here is the second highest in the world and rises quite fast. It is situated in the Vale of Glamorgan.