the diagrams below show the stages in the erosion of a headland

The diagrams depict the process in which a headland jutting out towards the

sea

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is eroded by

sea

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waves. At first sight, it can be clearly seen that there are four stages, ranging from eroding weak areas to retreating the headland.

Initially

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, rocks, the weak area of the headland, would be eroded by

sea

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waves and the parts that are gradually scraped create a cave. The next stage transforms the cave into an arch.

This

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process would create an arch when the gradual wave hit the cave many times.

For instance

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, arches have emerged in Durdle Door and Dorset.

Following

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this

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, the top of the stack would be fallen down by the

sea

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wave.

This

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makes a bigger space between the mainland and the stack.

At the end

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of the stages, the high peak of the land protrudes downwards and becomes smaller

such

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as a small rock mountain or remnant rocks.