Cuckmere Haven Click on thumbnail to see full picture Evidence of mass movement on the steep eastern slopes of the Cuckmere valley. Slump scars and terracettes from soil creep are visible. Salt marsh has developed in the tidal area beside the river. Creeks - channels formed by tidal water draining off the marsh - are clearly visible. The storm beach at Cuckmere Haven, with the Seven Sisters beyond. Groynes have been built to prevent longshore drift of shingle blocking and diverting the mouth of the river. At least two ridges are visible on the beach. A close-up view of the storm ridge. The beach seems already to have adopted its steep winter profile, with destructive plunging waves from storms having drawn material offshore. Most of the beach is composed of flint, although large pieces of chalk eroded from nearby cliffs can be seen nearer the waterline. Looking eastwards across the mouth of the Cuckmere River towards the chalk cliffs of the Seven Sisters. Mr Morrish in his element on the wave-cut platform below Short Cliff.   Our group walks across the wave-cut platform below Short Cliff. The chalk cliff here is topped by a layer of wind blown deposits (loess) while the wave-cut platform is littered with pieces of chalk and flint that have been eroded from the cliff face. Attrition by wave action has rounded off these pieces into smooth pebbles. A close up of the cliff face at Short Cliff. The horizontal bedding of the chalk is clearly visible and the tiny caves mid-way up the picture are the result of hydraulic action by breaking waves exploiting joints within the rock. The refuse below the cliff forms a strandline indicating clearly that waves reach this far up the beach.