15 Replies to “Contest #833”

  1. Durdle Door is a natural limestone arch on the Jurassic Coast, one of the most photographed landmarks in Dorset, UK.

  2. Great Britain Durdle Door Arch

    Limestone
    Durdle Door is situated within the Lulworth Formation, which is part of the larger Purbeck Group. These rock formations date back to the late Jurassic period, approximately 140 million years ago.

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