The lost world: Doggerland



Pictures at the cite


Published online 9 July 2008 | Nature 454, 151-153 (2008) | doi:
10.1038/454151a

News Feature
Archaeology: The lost world

Armed with a map depicting a 10,000-year-old landscape submerged
beneath the North Sea and fresh evidence from nearby sites,
archaeologists are realizing that early humans were more territorial
than was previously thought. Laura Spinney reports.

Laura Spinney
E. CH'NG/UNIV. WOLVERHAMPTON

Pilgrim Lockwood, the skipper of a British fishing trawler named
Colinda, wasn’t quite sure what to make of the thing his nets had
scraped up from the bottom of the North Sea. Just over 21 centimetres
long, it was made of antler with a set of barbs running along one
side. Back on land, Lockwood gave the artefact to the ship’s owner,
and it eventually made its way to a museum in Norwich, UK. It turned
out to be a prehistoric harpoon point dating to the Mesolithic period,
between about 4,000 and 10,000 years ago.


A sketch of the Mesolithic harpoon point found in the North Sea by the
Colinda in 1931.A sketch of the Mesolithic harpoon point found in the
North Sea by the Colinda in 1931.M. BURKITT & G. NORRIE

That was 1931, and archaeologists studying the artefact, which became
known as the Colinda point, began to realize that hunter-gatherers
would once have roamed across a vast plain that connected Britain to
the rest of Europe. But they had no idea what the plain looked like or
what life would have been like for the harpoon’s makers. Now
researchers have drawn the first map of that lost world, sketching out
a 10,000-year-old landscape filled with marshes, rivers and lakes. It
turns out that the region they call Doggerland may have been a sort of
paradise for Mesolithic people.

Because the archaeological evidence from the period is thin,
Mesolithic people have in the past been depicted by researchers as
restless nomads and Doggerland as a land bridge through which they
passed without leaving a trace. The new map suggests that, on the
contrary, Doggerland would have been an ideal environment for them to
linger in — until sea levels, rising since the end of the last ice
age, finally inundated it, turning Britain into an island about 8,000
years ago. Along with other new discoveries in Britain and continental
Europe, the research is helping to fill in crucial gaps in the current
knowledge about Mesolithic life. “Doggerland is key to understanding
the Mesolithic in northern Europe,” says Vince Gaffney, a landscape
archaeologist at the University of Birmingham, UK.

Click for larger imageClick for larger image

Along with his colleagues Simon Fitch and the late Ken Thomson,
Gaffney established the mapping project to outline the terrain of
Doggerland, named after the sandbank and shipping hazard of the Dogger
Bank (see ‘Mesolithic sites around the North Sea’). They managed to
borrow seismic survey data, which outline sediment layers below the
seabed, from the Norwegian oil company Petroleum Geo-Services. The
researchers then put their powerful computers to work to reconstruct
Doggerland in three dimensions.

In a pilot project beginning in 2002, the researchers reconstructed
6,000 square metres of the ancient landscape — slightly larger than a
football field. There, about 10 metres beneath the modern seabed, they
discovered the course of a major ancient river, almost as big as
today’s Rhine. They named it the Shotton River, after Birmingham
geologist Fred Shotton who, among other things, was dropped behind
enemy lines to map the geology of the Normandy beaches before the D-
Day landings. Now confident that the reconstruction would work, the
researchers expanded the project. The result is a 23,000-square-
kilometre map of a part of Doggerland — an area the size of Wales —
that they hope eventually to extend northward as well as eastward,
towards the Netherlands1.

Archaeologists are excited about the map for several reasons. First,
with an idea of how the terrain undulated, they can work out how, and
how quickly, it was submerged. It is thought that the sea level rose
no faster than about one or two metres per century, and that the land
would have disappeared in a series of punctuated inundations. “It was
perfectly noticeable in a generation,” says marine archaeologist Nic
Flemming, a research fellow at the National Oceanography Centre of
University of Southampton, UK. “But nobody had to run for the hills.”

Second, researchers can now start to predict how Mesolithic people
might have used the terrain. But it won’t be easy. Working with divers
and remotely operated vehicles is complex and expensive, and the new
map isn’t detailed enough for underwater excavation purposes: the
smallest detectable feature on it is about 10 metres high and 25
metres wide.

“Doggerland is key to understanding the Mesolithic in northern
Europe.”

Vince Gaffney

To get a more detailed picture of what Doggerland might have looked
like, computer specialist Eugene Ch’ng of the University of
Wolverhampton, UK, is building a virtual-reality simulation. Starting
with a 27-kilometre stretch of the Shotton River, he has recreated a
Stone Age settlement by the water’s edge, at the confluence of two
rivers, complete with thatched huts and racks for drying fish and
tanning hides2.

The virtual vegetation is faithful to the palaeobotanical record,
right down to the stinging nettles. There are fish in the rivers,
birds in the air and boar in the woods — although for now these are
just avatars rather than accurate biological models. The only thing
that is missing is the people, but Ch’ng will add them soon. He is
constantly feeding new data into the simulation, and his ultimate goal
is to turn the virtual reality into augmented reality, in which
archaeologists need only don a headset to enter the Mesolithic
landscape.
Found artefacts find meaning

The most immediate way in which the map will be useful, however, is in
giving context to marine archaeological finds. For more than a
century, fishing boats — particularly Dutch beam trawlers, whose nets
scrape the seabed — have been scooping prehistoric material out of the
North Sea. Most of it dates from the Palaeolithic, the vast era that
ended around 10,000 years ago, and includes the bones of woolly
mammoths and reindeer from the last ice age. But there is also some
more recent, Mesolithic material. Until now, archaeologists haven’t
been sure how to interpret these scattered remains. But with the
Doggerland map, “we’ll be able to position the archaeological finds
within that landscape to understand their meaning,” says Hans Peeters
of the National Service for Archaeology, Cultural Landscape and Built
Heritage in Amersfoort, the Netherlands.

Jan Glimmerveen, a Dutch amateur archaeologist, has over the past
decade collected around 100 Mesolithic artefacts, which he gets from
fishermen trawling the southern North Sea. The material includes an
adze- or axe-like tool made from an antler, with part of the wooden
shaft preserved, and a tool made from the bone of an aurochs, a large
type of extinct cattle. Some of the artefacts have been radiocarbon
dated to between 10,000 and 8,100 years ago, and all come from a small
area just off the southern edge of the Birmingham map of Doggerland.
The Dutch call it ‘De Stekels’ (‘The Spines’) because there are steep
dunes that were probably once close to a river. Although the artefacts
were lying loose on the seabed, Glimmerveen is convinced there was a
Mesolithic settlement on or close to those dunes, and Peeters agrees.
“You can look at it in a similar way to ploughed fields,” he says.
“Objects may have been displaced, but not over very large areas.”
A Mesolithic-age artefact, made from the antler of a red deer, trawled
from the bottom of the North Sea.A Mesolithic-age artefact, made from
the antler of a red deer, trawled from the bottom of the North Sea.H.
WILDSCHUT

Dutch researchers have a unique opportunity to retrieve Mesolithic
material that was once underwater but now is part of reclaimed land.
Peeters, for instance, works in a region of the central Netherlands,
the Flevoland polders, that was reclaimed from an inland sea in the
mid-twentieth century. In the early Mesolithic period, this area would
have been tidal wetlands. Later it became a peat marsh, and the
ancient bog has yielded a wealth of objects, including pottery and
flint tools, that he thinks were deposited as a ritualized reference
to lost ancestral lands3.

Back on the British side, archaeologists are extracting Mesolithic
information from a submerged site known as Bouldnor Cliff in the
Solent, the stretch of water separating the Isle of Wight from
mainland Britain. As sea levels rose, swelling rivers deposited
sediments over a Mesolithic valley. When the Solent began to form
around 5,000 years ago, it eroded first the sediments and then the
original valley floor. That erosion is continuing today, and near the
Isle of Wight’s shore, it is uncovering signs of Mesolithic human
activity. A few scattered flints emerged first, followed by the
remains of what could be a wooden dwelling and then, last summer,
tools, wood chippings and part of a log boat.

“In general the preservation is immaculate,” says Garry Momber,
director of the Hampshire and Wight Maritime Trust for Maritime
Archaeology in Southampton, who is overseeing the project. He believes
Bouldnor Cliff may have been a boat-building site, which is
significant because it was far from the coast and so the boats would
have been used only on a local lake. “We’re finding evidence of
sedentism,” he says. “These people would have been living and working
the land, maybe to a greater extent than we understand now.”
Nomads settle down

Attachment to the land, ritual practices and sedentism are usually
associated with later, Neolithic people. The boundary between the
Mesolithic and Neolithic periods is defined as when farming begins to
be practised in an area, and it generally dates to between 4,000 and
6,000 years ago in northern Europe. The stereotype of Mesolithic
people is as “surviving in this harsh wilderness”, says Peeters. “It
was only with the introduction of farming that this poor and risky way
of life was gradually brought to an end.” This view, he thinks, short-
changes Mesolithic people and the imaginative ways they may have used
the landscape, both in life and in burial practices (see ‘Death in the
Mesolithic’).

Evidence supporting this more complex view of Mesolithic life comes
from Téviec and Hoëdic, two Mesolithic burial sites on the coast of
Brittany, France. Here, archaeologist Rick Schulting of the University
of Oxford, UK, has analysed stable isotopes — mainly carbon and
nitrogen — in human bones to get an idea of what the locals ate.
Téviec and Hoëdic are only 30 kilometres apart, a trivial distance for
hunter-gatherers, and yet Schulting has found consistent differences
in the bone isotopes between the two sites. He thinks these reflect
differences in their diet: residents of Hoëdic, for instance, seem to
have got a lot more of their protein from marine resources than those
in Téviec. “That suggests to me that these people were quite embedded
into the landscape over the long term,” says Schulting. “They weren’t
moving around on a great scale.”

“These people were quite embedded into the landscape.”

Rick Schulting

A similar picture is emerging from Britain. In 2000, a team led by
Clive Waddington of Archaeological Research Services, in Derbyshire,
UK, began excavating a Mesolithic hut at Howick in northeast England.
By combining radiocarbon dating with analysis of the soil strata, they
were able to determine that three huts had been built at the site,
each on the ruins of the previous one. Together, the huts were
inhabited over about 150 years. That occupation wasn’t necessarily
continuous, Waddington says; nevertheless, over three or four
generations people kept returning to that place.

To him, this suggests that Mesolithic people may have been staking out
their group’s territory. “Not that hunter-gatherers usually have any
sense of ownership,” he says. “But what they do have is a very strong
sense of rights of access to land.” Waddington argues, in fact, that
the drowning of Doggerland led directly to the development of
sedentism and territoriality4. Although the idea is speculative, it
fits with the growing body of evidence for Mesolithic life in and
around Doggerland. Land would have become an increasingly precious
resource as the sea rose.

All these sites, taken together, may illuminate how Doggerland’s
residents adapted to the changing landscape. But when and how did
those changes begin? The Birmingham map offers a possible clue in the
shape of a giant basin called the Outer Silver Pit, which stretches
for up to 100 kilometres through Doggerland. Fed by an inlet to the
east, the pit would at one time have been a lake. But two sandbanks
running almost its full length could only have been formed by fierce
currents. Gaffney speculates that, as the sea rose, the peaceful lake
became a fast-flowing estuary into which only the most foolhardy
fisherman dared launch his canoe. So what started as an attraction for
water-loving people might eventually have driven them away, triggering
the migration whose long-range effects Waddington is seeing at Howick.

Exact details of this upheaval will be hard to prove, not least
because most of Doggerland remains uncharted. Still, archaeologists
are in little doubt that such turbulent environmental change required
an equally dramatic human response. In just a few thousand years,
Doggerland was transformed from a harsh tundra into a fertile
paradise, and eventually into the northern European landscape that we
know today. “It put human adaptability to the test,” says Gaffney.

Laura Spinney is a freelance writer in London and Paris.

*
References
1. Gaffney, V. , Fitch, S. & Smith, D. Europe’s Lost World:
the Rediscovery of Doggerland (Council for British Archaeology, in the
press).
2. Ch’ng, E. , Stone, R. J. & Arvanitis, T. N. The 5th
International Symposium on Virtual Reality, Archaeology and Cultural
Heritage http://www.opennature.org/Portals/0/Documents/ShottonRiver.pdf
(2004).
3. Peeters, H. Hoge Vaart-A27 in Context: Towards a Model of
Mesolithic-Neolithic Land Use Dynamics as a Framework for
Archaeological Heritage Management (RACM, Amersfoort, 2007).
4. Waddington, C. (ed.) Mesolithic Settlement in the North
Sea Basin: A Case Study from Howick, North-East England (Oxbow Books,
Oxford, 2007).

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