We finally visited the fossil forest at Lulworth Cove in Dorset, something we've wanted to do for ages. It was not a disappointment and I found it amazing to be somewhere that is 145 million years old. I'm surprised you are allowed to visit with the current ridiculous health and safety laws in this country - there are steep concrete steps to get down and then a narrow strip of cliff where the stumps of the fossilised tree ferns remain. We were the only ones visiting which was nice. If you do go, check when it is open as you walk across the army firing range - so that needs to be closed!