The appearance of the rocks in the cliffs at Rhossili Bay steadily changes. It changed most of all in relatively recent years when the limestone was quarried. But for all the time the rocks have been exposed they have been subject to almost imperceptible weathering and loss. Sometimes the attrition is noticeable, especially if you take a photographic record over the a series of years. The parts that get heavily pounded by the waves gradually break off in small pieces – sometimes revealing bright orange under-colours that eventually fade back to grey. Higher on the shore where the rocks are exposed for greater lengths of time to the air, the strata are colonised by black and yellow lichens that eat into the rocks on a microscopic scale.