secluded inlet between limestone cliffs near st govans head on the pembrokeshire coast

arch bay beach blue britain carboniferous cave cliff cliffs clouds coast coastal coastline dyfed early formation govans green head inlet landforms landscape limestone lush national nature ocean oceanic outdoor outdoors park path peaceful pembrokeshire rock rocky sand sandstone scenery scenic sea seashore secluded serene shore summer tide tourism tranquil travel unique vegetation wales water waves welsh wild