Places on the Triassic Coast.

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Places on the Jurassic Coast.

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Places on the Cretaceous Coast.

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Durdle Door – Dorset.

Durdle Door is a natural limestone arch which has been cut by the sea through the outer wall of vertical Jurassic Portland Stone and is the most famous landmark on this stretch of the Jurassic Coast.

The name “Durdle” is derived from an Old English word “thirl”, meaning to pierce or drill something, a name given to it probably more than a 1000 years ago.

From Lulworth Cove the walk to Durdle Door follows a steep path up the side of Hambury Tout. The original chalk path has now been paved with limestone sets, having been subject to serious erosion by feet of the 250,000 visitors who use it every year.

The arch, and the cove, has been created by the erosion of the softer bands of rock that lie behind the more resistant Portland Limestone. Durdle Bay with its shingle beach has been eroded into a single bay from what were once 3 separate coves.

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