You really should read that thread I linked to.
Doggerland wasn't an island like Atlantis, but after the tsunami only an island, "Dogger Island", remained (the future Dogger Bank). Still quite large back then (about the size of Ireland), but it kept slowly and steadily sinking.
It would have been more an 'Island of the Dead' (like many traditions around the North Sea hint at), a land of fog and mist (cold and warm sea currents meeting), a Niflheim, a 'Hell'.
I also assumed the Strait of Dover was much narrower 8000 years ago, and the chalk rocks of Dover and Calais (but much closer to eachother) may have been the origin of the true 'Pillars of Hercules'.
Some nice pics I created:
And I think many of you will like this video I posted in that thread:
Edited by Abramelin, 05 July 2012 - 01:23 PM.