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In page St Bees Head:

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The SSSI citation carries a description of the interesting geological features. On the headland itself is evidence of erosional features, wave cut notch and a wave-cut platform. On St Bees Beach to the south to lessen the effects of longshore drift, a row of nine groynes have been put in place. Further south, St Bees Beach is backed by small mud cliffs which are a common place to study the glacial moraines that formed them.[citation needed] The shingle both at St Bees and Fleswick bay show a huge variety of glacier-borne stones.[1]