StoneRoad2013's photos with the keyword: marine erosion

Interpretation board explaining the geological nature of Lulworth Cove, and hence why the cove has developed.

Detail of the two holes (sea caves) in the Portland limestone at Stair Hole - which usually means the whole assemblage, note - there is a full height opening in the main ridge just to the right of this image. I remember as a student in that late 1970s having a wonderful - and educational - time climbing in and around Stair Hole.

Looking eastwards from very close to Durdle Door, across Man o'War Bay and Rocks. The Man O'War Rocks are remnants of Portland / Purbeck limestone similar to Durdle Door. The band of softer Wealden clays are much narrower here, a few tens of yards compared to the just over two miles separation at Swanage, ten miles to the east.

Looking eastward across the cove. This place is a standard example of the differential erosion rates in rocks of varying strength / hardness. There is an interpretation board which explains this for the non-geologist visitor.

Rock arch produced by marine erosion in the Portland limestone. The bay is cut into the much softer Wealden clay beds.