In 1991 £2 million was spent on a rock groyne which trapped beach material and created a wide sandy beach, and a rock defence to protect the cliffs. This meant that the sea was not able to reach the base of the cliffs at Mappleton and cause further erosion. The cliffs between the groynes have been stabilised using a cover of vegetation.
This has successfully halted erosion between the groynes, but further south the rate of erosion has increased. This is because the sand that would have been deposited here to protect the cliff has been trapped by the groyne. In 2015 a large crack appeared to the south of the sea defences.
Does this matter if the houses are protected? What would you decide?