The Fossil Forest is the remains of an ancient forest from Jurassic times, located to the east of Lulworth Cove on the Isle of Purbeck in Dorset, England.[1] It lies on the Jurassic Coast, on a wide ledge in the seaside cliff. The site is within the Lulworth Military Range and thus has restricted access. Parts of forest can also be seen on the Isle of Portland and in quarries near the town of Weymouth to the west.[2]
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Near the end of the Jurassic period (c.144 million years ago) the sea levels dropped and a number of islands emerged in the Purbeck area, surrounded by saline lagoons and channels. For a short period, soil formed and a tropical forest grew up.
It then flooded under a shallow saline lagoon. The remains are now preserved as the Fossil Forest. This provides the most complete fossilised record of a Jurassic forest in the world.[2]