Explain the causes of cliff collapse

The physical causes of cliff collapse are the rock type. It could be made up of soft boulder clay like they are on the Holderness coast. This makes them more likely to erode by hydraulic action and so they collapse. Also if the cliffs are saturated due to heavy rain then they are more likely to slump. Storm surges cause more erosion so cause cliff collapse. In the Holderness coastline, storm surges cause the cliffs to collapse at a rate of 6m per year. The human causes of cliff collapse are building near the cliff edge as this increases the weight on the edge of the cliff so they are more likely to collapse.