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Coastlines - erosion

Over time, waves erode a notch at the base of a cliff in a process called undercutting. When this notch becomes too heavy it will break off and crash into the sea. Different parts of the rock face are eroded at high and low tide. If high winds meet a high tide, the erosion will be greater. Different coastal features such as caves, arches and stacks are all formed by erosion.

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Primary GeographyMountains and Coasts, Mountains and Coasts: Coastal Landscapes

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