England, East Sussex, Birling Gap, View passed costguard cottages showing chalk cliffs and pebble beach.

England, East Sussex, Birling Gap, View passed costguard cottages showing chalk cliffs and pebble beach.

England, East Sussex, Birling Gap, View passed costguard cottages showing chalk cliffs and pebble beach.

England, East Sussex, Birling Gap, View passed costguard cottages showing chalk cliffs and pebble beach.

Republic of Ireland, County Sligo, Ben Bulben mountain seen from Lukes Bridge area with rhododendrons in the foreground.

Republic of Ireland, County Sligo, Ben Bulben mountain seen from Lukes Bridge area with rhododendrons in the foreground.

Wales, Dyfed, Coastline, Green Bridge of Wales natural coastal rock arch near St Govans Head formed by erosion from waves.

Scotland, Outer Hebrides, Isle of Lewis, Gateway showing pathway erosion.

Scotland, Outer Hebrides, Isle of Lewis, Gateway showing pathway erosion.

Ireland, County Roscommon, Boyle, Boyle Abbey which was founded in 1161 by Cistercian monks, the North Aisle with its 21st century glass and timber cover which protects the area from future erosion da...

Ireland, County Roscommon, Boyle, Boyle Abbey which was founded in 1161 by Cistercian monks, the 21st century conserved North Aisle, Nave and Cloister.

Ireland, County Waterford, Ardmore, St Declan's Monastic site, Ardmore Cathedral, the west gable with its carved arcades and the round tower behind.