Western Hunter-Gatherers - the European Mesolithic

The final in my series exploring the hunter-gatherer cultures of modern humans within Western Eurasia. First I briefly looked at Apidima fossils as evidence that modern traits had been in Europe from an early date. With the Aurignacians, I investigated the earliest known modern human culture in Europe. With the Gravettians, I learned about how hunter-gatherers adapted in the lead up, and into the Last Glacial Maximum How they divided into the Solutrean Culture of Iberia and France in the west; and with the Pavlovian and Epigravettian Cultures of Italy, Czech and the East. With the Magdalenians I discovered how they burst back following Last Glacial Maximum, and through the warmer Bølling–Allerød interstadial.

Above image is my own. Years ago, I recorded several flint microblade waste cores, of which the above wasn't the most regular or impressive. But it's a photo that I could still resource. These artefacts, along with a tranchet axe-head and a few microliths that I recorded, were Mesolithic. I thought that it would be nice if I could bring this series to a close with something, a bit more personal.

Genetics

Let me first sum up the whole Upper Palaeolithic story according to Ancient DNA.

We have established that the Aurignacians had descended from Basal Eurasian (in South West  Asia or further north among descendants?) when they split from ANE (Ancient North Eurasian). An early expansion into Western Europe first occurred circa 43,000 years ago, but a volcanic event in Italy may have terminated this occupation, with it resuming afresh circa 37,000 years ago.  They had since admixed with Neanderthals, and on average had 4-5% Neanderthal DNA with long segments. Neanderthals were likely still present in Western Europe, when the Aurignacians arrived there.

Through all of these Upper Palaeolithic cultures, prey species, conditions, and temperatures varied across the entire Eurasian range, with woodlands sometimes forming in Iberia, as opposed the the great Mammoth Steppe further east. Consequently, cultures and perhaps genomes divided into western and eastern blocks over time.

After 33,000 years ago, the Gravettians arrive from the North East, to replace the Aurignacians. Pushed by worsening climatic conditions, they also divided into west and east. Some descendants or relatives of the Aurignacians must have still been surviving, for Genetic studies suggest that during this period of stress, that the original Gravettians were in turn replaced by people who had more Aurignacian-like DNA. The technology and the artefact culture did not evidence this reversal of population.

Last Glacial Maximum passes, and 17,000 years ago, the Magdalenian Culture arises. The population behind this change were not so much the Solutrean of the west, but the people of the Epigravettian of Italy and the East. And they carry Aurignacian DNA. Very late, the Creswellian Culture develops in Britain, along with the Hamburgian around 12,000 to 10,000 years ago.

That brings me up to date with the Western Hunter-Gatherers and the approach of the Holocene.

WHG as a genetic component

So which of these groups did this component descend from?

Chasing this up brings me back to:


In this study, the authors found that WHG ancestry could be located into the Epigravettian genome. That hunter-gatherers had moved up primarily from the eastern and southern refugia to reach places like Britain.

WHG haplogroups so far identified

yDNA are I2a1 (I-M26) and R1b1a1a (R-M7)
mtDNA are U (mainly U5, U2 and U4)

Were the Earlier Mesolithic people of Britain related to those associated with the Creswellian points? Possibly. Or they could represent a fresh migration most likely not from the recently dominating Magdaenian Culture, but from the descendants of the earlier Epigravettian of SE Europe, possibly with admixture from  fresh populations crossing a dry Aegean from SW Asia:

Wikipedia:

The WHG displayed higher affinity for ancient and modern Middle Eastern populations when compared against earlier Paleolithic Europeans such as Gravettians. The affinity for ancient Middle Eastern populations in Europe increased after the Last Glacial Maximum, correlating with the expansion of WHG (Villabruna or Oberkassel) ancestry. There is also evidence for bi-directional geneflow between WHG and Middle Eastern populations as early as 15,000 years ago.

The WHG of Western Europe is sometimes referred to as the Villabruna or Oberkassel Cluster. They attracted public attention, when analysis of their DNA revealed that they were genetically likely to have had dark hair, and dark skin, with some individuals probably having light coloured, even blue eyes.  Dark skin was likely to have been a feature of earlier, Upper Palaeolithic fore-bearers. Despite low UVR levels, they found other ways of dealing with poor vitamin D production. Their diet may have compensated for the low UVR.

Image Source. Photo by Werner Ustorf (Flickr). Cheddar Man reconstruction.

A separate population appeared in Eastern Europe, defined as EHG (Eastern Hunter-Gatherer) and an SHG (Scandinavian Hunter-Gatherer) admixed between the two groups.

Image Source. Map of distribution for WHG genetic cluster across Europe.

Mesolithic Europe

These were the last of the European hunter-foragers who needed to adapt to climatic and environmental changes of the Holocene period. The Younger Dryas (12,900 to 11,700 years before present) represented a return of bitterly cold conditions before the rapid commencement of the Holocene. See the below trend in temperatures. Temperatures in Greenland rose by 10 C in only a decade.

Image Source.  Evolution of temperature in the Post-Glacial period according to Greenland ice cores (Younger Dryas)

Flora change followed this rapid rise in annual temperatures. During the Earlier Mesolithic, tundra grasslands were gradually replaced by birch scrub, followed by forest. Species to reach Britain included birch, alder, pine, and alder. During the Later Mesolithic, temperatures continued to rise. Lime (Linden), hazel, hawthorn, blackthorn, ash, elm / wych elm, followed. Beech probably didn't arrive until the end of the Mesolithic period. It had previously been speculated that Late Mesolithic lowland Britain would have been covered by one continuous wildwood canopy. However, pollen analysis has suggested some areas of open grassland, possibly kept open by the ruminations of large herbivores such as aurochs (wild cattle), bison, red deer, and roe deer. There has been some suggestion that the hunter-gatherers may have been managing these areas, and extending them with fire. This may have improved the regeneration of hazel (hazel nut was likely to have been a very important food source), and better, more open hunting conditions, where ungulates herd together in the open.

Lithics

The knapped flint and stone tools of the Mesolithic are largely characterised by the production of very small blades known as microliths. These would often be notched into small geometric shapes. Arrows were likely composite, with a microlith point, and small microlith barbs being glued and / or bound along the shaft behind that point. Microliths may have had further uses as microburins (piercers or borers for hide clothing etc) or as scalpel blades for working wood, bone, and antler. A further stone tool associated with this period is the Mesolithic tranchet axe head.

A tranchet axe head that I recorded during my surveying years.

Antler working

Star Carr is a well known archaeological site in North Yorkshire that dates to between 11,280, and 10,500 years before present. This places it shortly after the end of the Younger Dryas during the Earlier Mesolithic.

Image Source.  Star Carr collection at Yorkshire museum - mesolithic spear tips from the earliest known post glacial settlement in England. Star Carr has become the type site for the NW European Earlier Mesolithic.

Notes for Mesolithic Western Europeans. The last free people of Europe.

Lola, Mesolithic girl on National Geographic

The above is a link to a reconstruction by Tom Björklund of a Mesolithic girl who lived in what is now Denmark. It is a very unique and creative reconstruction, because nothing physical of this girl nicknamed Lola survives into our archaeological record! She is only known by her DNA (and that of recently eaten food) that she left on a lump of birch tree pitch that she had chewed as a gum some 5,700 years ago. But I really like this reconstruction. I think that she makes a beautiful wild child. Straight out of the lines of a novel that I'm trying to write.

Analysis of her DNA strongly suggests brown toned skin, if not dark brown. Her hair dark brown. The DNA supports that her eyes were light coloured. Perhaps blue, blue-green or hazel? I'll return to Lola, but first these features correspond to those suggested by the genomes of other Mesolithic remains scattered around Europe.

Cheddar Man

Cheddar Man who lived in South West Britain around 10,000 years ago is the best known. The revelation several years ago that the DNA sequenced from his genome, suggests both dark skin and blue eyes caused quite a commotion. A lot of people didn't like it, and accused the geneticists of woke.

We always knew that the earliest modern humans were likely to have plenty of melanin. Subsisting on a hunter-gatherer diet that was rich in dietary Vitamin D meant that there was little adaptive pressure for them to lose this dark skin in a hurry. Just as some hunters in the far north and far south have retained dark skins into recent times. The emphasis to reduce melanin may not have arrived until following major shifts to a poor, agricultural diet in northern zones. The DNA associated with very light skin of modern Western Europeans may not have arrived until quite recently (prehistorically speaking).

We also had Villabruna Man in Northern Italy. His presence and DNA is less known to the general public. But even before the controversy of the Cheddar Man reconstruction, we knew from Villabruna and other remains that he lacked certain genetic indicators of light skin and:

Additional evidence of an early link between west and east comes from the HERC2 locus, where a derived allele that is the primary driver of light eye color in Europeans appears nearly simultaneously in specimens from Italy and the Caucasus ~14,000-13,000 years ago.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4943878/

But one recent study proposes that there were at least two distinct clusters of hunter-gatherers around Europe at the close of the last Ice Age:

On the basis of the genetic variation of present-day Europeans, this could imply phenotypic differences between post-14 ka hunter-gatherer populations across Europe, with individuals in the Oberkassel cluster possibly exhibiting darker skin and lighter eyes, and individuals in the Sidelkino cluster possibly lighter skin and darker eye colour.

https://www.nature.com/articles/s41586-023-05726-0

 I think that may be close to the truth, that there was most likely a variation in skin tones and eye colours across Europe during late prehistory.

Then we met 'Elba the Shepherdess' from Galicia, Spain. She dates to around 9,300 years ago. Analysis of Elba's ancient DNA suggests that she was dark-skinned and haired, and brown-eyed. Her remains had spectacularly been excavated along with three aurochs (wild cattle). Her relationship to these aurochs has raised extremely controversial questions about possible domestication. I do like the aurochs. I might make them the a subject of a later post.


Imagination


British Archaeology has long been going through a struggle where it tries to lose its roots within the Arts, and relocate itself within the (social) sciences. Clinging vigorously to data, they fear telling any stories (which is what hi-story does). In my own creative writing, I have my British hunter-gatherers at the close of the Mesolithic as shameless animists, who see themselves very much as a part of Nature. Mine are trapped into nations or tribes, divided into semi-nomadic bands who wander a larger region that I call a wilderness. In the background (but no longer in the novel) from their own golden age, they look back through folklore to an earlier time when they were more free, to wander further, one nation, following herds of steppe and forest bison.

In their own contemporary wilds 6000 years ago, I have them hunting red deer, roe deer, wild pig, aurochs (wild cattle), red squirrel, martens, seal, porpoise, whales, beaver, fox, waterfowl (ducks/geese), bustards, cranes, wood pigeon, woodcock, fishing/trapping eel, salmon, trout, chub, pike. Foraging for hazelnut, acorns (which they need to process to reduce tannin), cat-tails, wild garlic, pig-nuts, harvesting wild grass seeds, tubers, roots, tree sap, flower buds, lichens, sea lettuce, samphire, berries (blackberry, raspberry, elderberry, hawthorn), black bee honeycomb (yes they make berry mead and alcoholic birch sap), greens (including some springtime tree leaves), tree inner bark (in desperation or to chew), fungi (bollettes, blewitts, ceps, chanterelle, puffballs, chicken-of-the-woods and many more), mussels, sea molluscs /shellfish, crustaceans. I did also include beechnuts, but then found that the beech may have only just arrived with the Neolithic. Ugh! 

One thing that this creative writing has helped me understand about the British Late Mesolithic, is that the forests at that time lacked a wealth of biodiversity. Britain had parted from the European Continent too soon following the glaciers - Ireland more so. Few tree species had made it here. The temperate wild-woods (I don't think all of those in the south-east could have been classed as rain-forests) could be very mean with any calories between early winter and mid spring. I emphasise that in the story, the need to gather in late summer and through the autumn, and to process and store what they could. Acorns and hazel nuts could be roasted and even ground into a flour to make breads.  Wild grass seeds may have been added. The game would have been fatter at that time of year, and the salmon would run. Oh, I dare to suggest that my hunter-foragers are also gardeners of their wilds, encouraging hazel and birch to spread and survive.

Late winter may have been comparatively miserable, where the bands would laze close to hearths. Conserving valuable calories of their energy.

I enjoy imagining the wild-woods of SE Britain 4000 BCE. Perhaps not all temperate rain-forest, but neither anything like a modern day woods. Deadwood, flooding, saplings, rot, deep ferns and mosses. They would have been difficult to pass through by foot. Waterway would have been preferred. Trees with mosses and octopus boughs. Lime (linden) trees, elm, wych elm, oak, birch, alder, willow, ash, pine.  Wolves, lynx, brown bear. Eagles, black woodpeckers, and goshawks. But I don't imagine it all as wild-wood. I have opted in my imagined Britain 4000 BCE, for lots of small glades, and larger open plains that in the story, I call prairies. Here herds of aurochs join those of red and roe deer, to keep this scrub and grassland opened up. Bustards parade by orchids, while the cuckoo calls.

But all in my imagination. Not fact.



Returning to Lola in Denmark. The gum also revealed that she was lactose intolerant, and this has also been found in other genetic remains of this period. The DNA of hazel and mallard duck was also on the gum, and it is thought that hazelnut and duck may have been her recent meals. I think it is incredible archaeology that a lump of birch pitch could produce such a result. The 5,700 ybp was based on radio carbon dating of the lump of Mesolithic chewing gum.

When I was a voluntary archaeologist and field walker, I would treasure any microliths, microlith waste cores (I had a few), and a tranchet axe head (below) that I found from the Mesolithic. It was always my favourite period of prehistory. When people would have related to other species as a part of the Natural World to which they belonged. Innate animism that I strongly relate to as an autistic biophilliac. Or did they? Next post I will look at Gobekli Tepe and other sites of this same period across Anatolia. Have we simplified the savage?


So for all of their imperfections and inaccuracies, here are the faces of the Mesolithic. The last truly free wild people of European Nature. The last savages of Europe. Before we started to screw it all up.  Lola is my favourite.