Walkers are being urged to take care over the festive season after a dramatic cliff collapse in Sussex. Gavin Wilyman captured the exact moment of the collapse.
Watch the large section of cliff breaking away...
Gavin Wilyman captured the exact moment of the collapse. It's thought that heavy rain made the chalk cliffs unstable.
Recession of coastal land is often caused by erosion from the sea acting together with landslides caused by interactions between groundwater and the soil or rock.