Last edited Sun Oct 23, 2016, 03:43 PM - Edit history (8)
From: http://www.orkneyjar.com/history/mesolithic.htm
"At this time (7000BC) , however, the wooded landscape of Orkney would have been unrecognisable to modern Orcadians (the reason why there is so much petrol in Scotland). The sea-level was considerably lower - up to 30 metres lower - so today's green, rolling Orkney hills would have been the peaks of high ground."
The confirmation that, very probably, people walked to go all around the Orkney isles. And maybe, Shetland included. Because that there are such big number of similarities between those archipelago. That confirms my theory I couldn't discuss with anybody.
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ANOTHER ARTICLE. This time from http://www.lagranepoca.com/archivo/24912-descubren-doggerland-una-atlantida-sumergida-frente-costas-del-reino-unido.html
The MAP is here: 
The original article is in Spanish language. For me (and maybe for some people more) it's more useful reading it in Spanish because I can't speak and understand too much well English to understood everything. I translated it with Google Translator's help.
"A vast underwater area in the North Sea, called Doggerland, might once have been home to tens of thousands of people in the Stone Age, before it disappeared in a tsunami, according to 15 years of research by UK scientists.
Doggerland stretched from northern Scotland to Denmark and down towards the Channel Islands. However, gradually it plunged from 18,000 to 5,500 B.C.
"Doggerland was the real heart of Europe until sea levels rose to show the coast of the UK today," said geophysicist Richard Bates, at the University of St. Andrews, in a statement.
"We had speculated for years about the existence of a lost land dredged by fishermen around the North Sea bones, but only when you start working with oil companies in recent years, we were able to recreate what this seemed lost land, "adds Richard Bates.
With geophysical computational models and the material collected from the seabed, including fossils of plants and animals that lived Doggerland, scientists reconstructed a huge and complex landscape.
"We were able to model its flora and fauna, create an image of the ancient people who lived there and begin to understand some of the dramatic events that subsequently changed the land, including rising sea levels and a devastating tsunami," reported Bates.
Initially, Doggerland was mountainous with rivers, large lakes and an interlaced coastline, but as sea levels rose, he transformed in an archipelago of low islands.
Other interesting reports include a mass grave gigantic standing stones, and possible human burial sites.
"We have not found an 'X marks the spot' or 'Joe created this', but we have found many artifacts submerged with features that are very difficult to explain by natural disasters such as mounds surrounded by ditches and fossilized tree trunks causes the seabed", Bates said.
"In reality, there is little evidence" (...) "because much of it has eroded underwater, is like trying to find just one part of a needle in a haystack."
"What we have found is however, a significant amount of evidence and we are now able to identify the best places to find preserved signs of life."
Images and objects are now on display in an exhibition called "Drowned Landscapes" at the annual Summer Exhibition of the Royal Scientific Society of London."
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An image about the effects of the tsunami (the increasing of water levels since the tsunami):
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Two more interesting photos about the Storegga Slide:
https://drive.google.com/file/d/0B9wbtU2b0_z6ZWJ3c1E0NEFNZEk/view?usp=sharing
https://drive.google.com/file/d/0B9wbtU2b0_z6aGlMdnRwZFBlRVU/view?usp=sharing
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