Rocks on the island are very rich in fossils and many of these can be seen exposed on the beaches as the cliffs erode.

As the cliff eroded further, the brook moved east again and is currently eroding an unnamed chine labelled New Chine.

Both the fort and chapel, however, threaten to collapse because the surrounding cliffs are eroding at a frightening rate.

All these cliffs erode rapidly, retreating at a rate of up to 1.86 metres per year.

It's a protected natural park where tall cliffs eroded by the Atlantic swell into fantastic shapes and sweep down to long sandy strands.

Once cliffs erode, midden-remains become exposed as blackened areas containing charred stones, bones, and shells.

The cliffs have eroded since it was built, and much of the fort has been lost to the sea.

Since chalk forms in layers separated by contiguous bands of flints, the physical structure affects how the cliffs erode.

Currently the cliffs are eroding at a rate of about 3.5 metres per year, although this process is not gradual.

It became apparent that the cliff was eroding at a rate not previously recognized, which was likely to endanger several properties above it.