The Seven Sisters (geology)

The Seven Sisters are a prominent series of chalk cliffs along the southern coast of England, specifically in Sussex. These cliffs formed over millions of years from the accumulation of microscopic marine organisms' calcium carbonate shells, which compacted into soft chalk rock. Erosion from the sea has sculpted these cliffs into striking, steep formations. The Seven Sisters are not only a natural landmark but also an important example of sedimentary geology, illustrating how marine sediments can build up and later be shaped by natural forces into iconic coastal features.