The Dorset coast has erosional and depositional coastal landforms.
The Dorset coast is made of bands of hard rock ( like limestone and chalk) and soft rock ( like clay). The rocks have been eroded at different rates giving headlands and bays and lots of other coastal landforms.
Durdle Door is a great example of an arch. Erosion by waves opened up a crack in the limestone headland, which became a cave and then developed into an arch.
Lulworth cove is a cove formed…