Nige and me went here today and it was stunning and interesting......here is some info.
Durdle Door is one of the most photographed landmarks along the Jurassic Coast. This rock arch in the sea was formed as a result of the softer rocks being eroded away behind the hard limestones, allowing the sea to punch through them. The name Durdle is derived from an Old English word 'thirl' meaning bore or drill. Eventually the arch will collapse to leave a sea stack such as those that can be seen at Ladram Bay in East Devon.
Each year more than 200.000 walkers use the footpath between Lulworth Cove and Durdle Door, making it the busiest stretch in the south west.
Oh and my cream tea lol x