Dover - town and major ferry port . Its strategic position has been evident throughout its history: archaeological finds have revealed that the area has always been a focus for peoples entering and leaving Britain. The name of the town derives from the name of the river that flows through it, the River Dour. The higher land on either side of the valley – the Western Heights and the eastern high point on which Dover Castle stands – has been adapted to perform the function of protection against invaders.

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