and in cultural terms, the Mesolithic there goes its own way." A study published in 2014 suggested that the only remaining parts of Doggerland at the time of the Storegga Slide were low-lying islands, but supported the view that the area had been abandoned at about the same time as the tsunamis. Another view speculates that the Storegga tsunami devastated Doggerland, but then ebbed back into the sea, and that later Lake Agassiz (in North America) burst, releasing so much fresh water that sea levels rose over about two years to flood much of Doggerland and make Great Britain an island. The difference in distribution of broken shells between lower-lying and high-lying parts of the area also suggest survival of land after the Storegga tsunami. Discovery and investigation by archaeologists The existence of what is now known as Doggerland was established in the late 19th century. H. G. Wells referred to the concept in "A Story of the Stone Age" (1897), which is set in "a time when one might have walked dryshod from France (as we call it now) to England, and when a broad and sluggish Thames flowed through its marshes to meet its father Rhine, flowing through a wide and level country that is underwater in these latter days, and which we know by the name of the North Sea. ... Fifty thousand years ago it was, fifty thousand years if the reckoning of geologists is correct", though most of the action seems to occur in what is now Surrey and Kent, but stretching out to Doggerland. The remains of plants brought to the surface from Dogger Bank were studied in 1913 by Clement Reid, and the remains of animals and worked flints from the Neolithic period had also been found. In his book The Antiquity of Man of 1915, anatomist Sir Arthur Keith discussed the archaeological potential of the area. In 1931, the trawler Colinda hauled up a lump of peat whilst fishing near the Ower Bank, east of Norfolk. The peat was found to contain a barbed antler point, possibly used as a harpoon or fish spear, long, which dated from between 4000 and 10,000 BCE when the area was tundra. Interest was reinvigorated in the 1990s by Bryony Coles, who named the area "Doggerland" "after the great banks in the southern North Sea" – and produced speculative maps of the area. Although she recognised