Answer: Cave
Notes: Cliffs, caves, arches, stacks are some of the landforms produced by wave erosion. Caves form where rock runs in bands horizontal to the direction of wave attack. There is a band of resistant rock closest to the sea and a band of less resistant rock inland. The waves seek out faults in the hard rock and erodes using the processes of abrasion/corrasion and hydraulic action through to the soft rock behind.
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