Trow Quarry

Coastal erosion is an effect of the sea breaking against the land, causing it to slowly wear-away.

This process usually happens over a long period of time, depending on the type and nature of the rock along the land's edge. Basically, the softer the rock, the more prone it is to erosion.

The land behind Graham Sands and Southern Bay was filled with waste material between the 1960s and 1970s, making it softer that the surrounding rock headlands and therefore at greater risk of erosion.