Geograph - photograph every grid square

There are a series of groynes along the beach from the mouth of the Afon Ddulas at Llanddulas on both west and east beaches. Some of them still seem to have enough substance to contain longshore drift of shingle away from the river mouth, but many are reduced to just a series of uprights, sometimes with horizontals well above the ground and perform very little in the way of a useful function. The next two or three east from here seem to have retained a little more fabric, and are indeed holding back a certain amount of shingle from its eastwards drift.