Durdle Door, like Chesil Beach, belongs to a piece of Jurassic coast which is a mind boggling 140 million years old. After a great deal of research i.e. dragging up my memories from GCSE geography I recalled how archways like these are formed.
If I remember correctly, the force of the waves erodes the rock. The level of erosion completely depends on the hardness of the rock - with soft rock being eroded first. Coupled with the direction of the layers of the rock, this provides the unique conditions for Durdle Door's archway to be formed.
Eventually the roof of the archway will collapse due the force of gravity, its mass, and lack of support and all that will be left of Durdle Door will be a couple of stumps. I have a feeling that this will look far less impressive.
M and I decided to escape the crowds at Durdle Door to scramble up a hideously steep and high cliff path.
We climbed the stupidly tall cliff |
After much cursing it was deemed definitely worthwhile. Just look at that view!
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