so that one could get a background for the documentary.
http://en.wikipedia.org/wiki/Doggerland
another link
Doggerland Mapping a lost world
So you think climate change is new? So you think the flooding of landmass by the oceans is a new? So you must have not heard of the times when people walked from London to Amsterdam.
Doggerland is the name of a vast plain that joined Britain to Europe for nearly 12,000 years, until sea levels began rising dramatically after the last Ice Age. Taking its name from a prominent shipping hazardDogger Bankthis immense landbridge vanished beneath the North Sea around 6000 B.C.
Like all landbridges, Doggerland seems to have been a pretty busy thoroughfare for ancient hunters and gatherers. But archaeologists hardly gave it a thought until 2002, when a small group of British researchers laid hands on seismic survey data collected by the petroleum industry in the North Sea.
It is thought that the sea level rose no faster than about one or two meters per century, and that the land would have disappeared in a series of punctuated inundations. According to marine archaeologist Nic Flemming, a research fellow at the National Oceanography Centre of University of Southampton, UK. It was perfectly noticeable in a generation, but nobody had to run for the hills.
Although hunter-gatherers usually didnt have much sense of ownership, land would have become an increasingly precious resource as the sea rose, which according researchers Clive Waddington & Nicky Miller might have led directly to the development of sedentism and territoriality
http://www.nextnature.net/2009/04/mapping-a-lost-world/