It's the fossilised impression of a prehistoric tree, on the Dorset coast near Lulworth.
See another picture <a href="http://www.flickr.com/photos/deano/41590406/in/set-912247/">here</a>.
Fossil Forest, Lulworth is a tourist attraction, one of the Archaeological sites in West Lulworth, Britanniarum Regnum. It is located: 540 km from Londinium, 630 km from Birminghamia, 820 km from Nottingham. Read further
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