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Corton cliffs

 

8 April 2010

 

 

 

North Norfolk and Happisburgh Index

 

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Entry to the beach was just to the south of Pleasurewood Hills, parking just 0ff-road. The sweep of beach to the south, and Lowestoft, was backed by a gentle and vegetated rise to the road, steepening to the north and graded cliffs behind hard sea defences.

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A roadway gives vehicular access to the beach, but was only used by a single scooter! A low sea wall defends the roadway with a concrete glacis.

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Slope failure was evident behind the concrete works, and as the cliff is probably a mixture of clays and sandy crag (visible) the flows are probably quite mobile. On the right the groyne displays an erosion notch on each leg, indicative of a sandy or shingly beach.

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A trio of views of the beach profile, and a mobile part of the slope behind, where moisture is seeping over the concrete wall and the slope becomes a slide, exposing the sandy free face at the top of the cliff.

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The groyne system may be a declining force, due to lack of maintenance, but is still a major influence on the beach landscape.

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The shoreline, of steel sheeting and rock armour, is now separated from partially-demolished concrete pillboxes and incomplete groynes.

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The walkway has been subjected to slumping and even, as here, concrete blocks from above. Steel sheet-piling and concrete tetrapod armour completes a comprehensive defence.

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More views of the concrete glacis, sheet-piling and rock armour. Where the concrete above the walkway has been damaged, rock armour has been substituted.

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Continued slope failure has invaded the walkway and collapsed the concrete glacis above. Here, the groynes have been separated from the land and are all-but useless now.

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At the end of the walkway at its northern end, steps take you up to the village of Corton. Views to the north start with the massed ranks of rock armour, and even a substantial gabion slope ... quite possibly replacing the concrete, but more flexible in dealing with earth movements.

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Suffolk Norfolk Great Yarmouth Lowestoft Corton coasts cliffs erosion beaches groynes clay sand defences revetments gabions tetrapods rock armour rip-rap mobile slides slumps  tourism caravans wind farms offshore concrete blocks

 

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