At www.independent.co.uk/news/uk/home-news/uk-weather-storms-expose-ancient… … in February of last year the spring storms near Penzance in Cornwall uncovered tree stumps from between 4000 and 6000 years ago (C14 dates). There are forest beds west of Penzance, at Wherry Town, and to the east of Penzance, at Chyandour. They were therefore submerged either at the 3000BC or the 2300BC events (it would seem the more likely). In addition there are the remains of submerged woodland in Mounts Bay and at Portreath Beach, and also in Daymer Bay. Submerged woodland (oak and pine trees) were uncovered near Borth in mid Wales (as previously posted), the remains of the Sunken Hundred (Cantre'r Gwaelod).
In Mounts Bay pine and oak trunks were revealed (and are regularly uncovered by the tide) but in the storm trunks up to 5m in height were revealed and the remains of hazel thickets with well preserved cob nuts and acorns washed out by streams running across the beach. Nowadays you are lucky to find a cob nut as grey squirrels harvest them before they have reached maturity.