The soft boulder clay holds rainwater and run-off. Waves erode the base of the cliff creating a wave-cut notch. The clay becomes saturated and forms a slip plane. The weight of the saturated cliff causes it to slump.

Find out more about mass movement.

Swash

Find out more about waves.

Material is dissolved and carried by the water.

Find out more about coastal transportation.

A concordant coastline is where the same rock runs along the length of the coast. Concordant coastlines tend to have fewer bays and headlands.

Find out more about concordant coastlines.

A bar is a ridge of sand or single that joins two headlands either side of a bay.

Find out more about landforms of coastal deposition.