Llanrhidian Sands is a large, windswept and mostly featureless expanse of sand on the Gower's northern coast. The shore is sand and millions of cockle shells (the light area in the photo), backed by saltmarsh. The area was once part of a firing range, and a derelict observation post still stands on the beach. Signs warn not to touch any items of military debris, which could go 'bang'.
From the car park at Weobley Castle (pronounced 'Web-lee'), a footpath leads down to the coastal path, from where a stone track continues for 1⅓ miles across Llanrhidian marsh to the sand. This track is not a right-of-way, so it would be polite to seek permission before using it. The marshes are home to some interesting bird life - such as wheatears, lapwings and little egrets.
At high tide, most of the sand is covered and spring tides will cover the salt-marsh as well. It would be wise to know the tide times before visiting, and unless you are familiar with the area, not to stray too far out on an incoming tide.