As the notch increases in size, the cliff becomes unstable and collapses, leading to the retreat of the cliff face.
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The backwash carries away the eroded. Sea level (high tide) 5. As the notch increases in size, the cliff becomes unstable and collapses, leading to the retreat of the cliff face.
Wave cut notches & platforms.
When the notch is cut too far, the area above this notch collapses forming a cliff. When the notch is cut too far, the area above this notch collapses forming a cliff. Results in undercutting of the cliff face and subsequent rock fall. A platform is broadened as waves erode a notch at the base of the sea cliff, which causes overhanging rock to fall.