Alca torda beak bird black cliff coastline Great Britain island natural nature Pembrokeshire razorbill rest rock rocky sea shore Skomer united kingdom wales water welsh white Brecon Beacons changeable cloud fey fickle green hills landscape moor mountains panorama rural shadow sky stormy sunlight view bracken clouds countryside destination direction exercise footpath path plants track trail travel walk walker Barmouth beach boat bridge Causeway estuary gantry girders line low Mud pillars railway resort sand tidal tide yacht architecture blue brass decor door elements historical home house Letterbox old ornamental panels pebbledash privacy private quality regency residential security style threshold wall coast current engulf fierce overwhelm pour rocks seethe seething smash spume swirl violent waves iron pedestrian perspective planks shadows vanishing point walkers walkway wooden Armeria flowers hillside pink spring summer thrift wild