Rosa Rubicondior: Creationism Refuted - 'Doggerland' Was Lush Forest

Southern 'Doggerland' 16,000 years ago.

AI-generated image (ChatGPT 5.4 Thinking).

Warwick Study: Ancient Forests Under North Sea Lost World

More than 16,000 years ago, long before, according to their favourite Bronze Age mythology, creationists' little god created a small flat Earth under a dome centred on the Middle East, people and animals were able to walk from continental Europe into what are now the British Isles. They did so not by walking on water, but across dry land now submerged beneath the North Sea, of which Dogger Bank is one surviving remnant. From this lost landscape, Ice Age fossils such as mammoth teeth and tusks are still regularly dredged up in trawlers' nets.

Whatever hominins left the famous footprints at Happisburgh, Norfolk, almost certainly reached Britain on foot from western Europe, as did, much later, the hominins represented at Swanscombe in Kent and Pontnewydd Cave in Denbighshire, Wales.

Now, evidence presented in Proceedings of the National Academy of Sciences (PNAS) by a team led by Professor Robin G. Allaby of Warwick University's School of Life Sciences shows that southern Doggerland was not a bleak, barren wasteland but supported temperate woodland more than 16,000 years ago. The team reached this conclusion from a detailed analysis of 252 sediment samples from 41 marine cores taken along the prehistoric Southern River in southern Doggerland, where exceptionally well-preserved deposits preserve an environmental record from the Late Pleistocene into the Holocene.

For creationists, the problem is not merely the age of this drowned landscape, awkward though that is for biblical chronology. It is the existence of the evidence itself: well-preserved, datable layers laid down over vast spans of time, preserving a coherent ecological history that can be tested, checked and verified. If biblical mythology were true, those layers should not exist in anything like this form. But they do, and they tell a story utterly at odds with Genesis.

In science, evidence that contradicts a hypothesis counts against it. A theory that repeatedly fails is supposed to be revised or abandoned. Creationism works the other way round. Evidence against it is treated not as a reason to change one's mind, but as a test of faith. By that twisted logic, the more decisively reality refutes it, the more convinced its followers become that they must be right. That is not intellectual strength. It is simply a refusal to let evidence matter.

An interesting aspect to this work, and one that may upset creationists, is the fact that the team used two different, unrelated methods for dating - carbon dating and optically stimulated luminescence (OSL) dating which converged on the same dates.

How sedimentary ancient DNA is transforming archaeology. Sedimentary ancient DNA, usually abbreviated to sedaDNA, is DNA preserved not in bones or teeth but in the sediment itself. In archaeological contexts it can come from skin cells, hair, faeces, urine, blood, decayed soft tissue, plant matter, microbes, and other biological traces left behind in a layer. That makes it especially useful because a sediment sample can preserve evidence of organisms that left no recognisable fossil or artefact behind.

The basic method is straightforward in principle, even if technically demanding. Archaeologists take carefully controlled samples from the interior of cores or freshly cleaned stratigraphic sections, avoiding exposed surfaces to reduce contamination. In specialised clean labs, DNA is extracted from the sediment, sequenced, and then identified by comparing the resulting fragments with reference databases. Researchers may use metabarcoding to get a relatively quick picture of which taxa are present, or shotgun sequencing and target capture when they want finer taxonomic resolution or particular groups such as hominins or mammals.

For archaeology, the appeal of sedaDNA is that it can answer questions that traditional methods often miss. It can help reconstruct past environments, identify plants and animals used for food, detect parasites and pathogens, track domestication and land use, and sometimes even reveal the presence of humans or other hominins where no bones survive. The technique has already shown that cave sediments can preserve hominin DNA even in the absence of skeletal remains, and studies at sites such as Denisova Cave and El Mirón Cave have recovered evidence for humans and fauna that was richer than the visible fossil record alone suggested.

Its power, however, comes with important cautions. SedaDNA is highly vulnerable to modern contamination, root intrusion, movement of DNA through sediments, and chemical inhibitors such as humic acids. Authentication therefore matters: researchers look for the characteristic short, damaged fragments expected of ancient DNA, and they interpret the results alongside stratigraphy, dating, pollen, macrofossils, artefacts, and other evidence. Used that way, sedaDNA does not replace conventional archaeology; it adds an exceptionally sensitive new line of evidence, sometimes from layers that look almost biologically silent to the naked eye.

The work of the Warwick-led team, and the significance of this discovery for understanding the landscapes and ecology of Ice Age north-west Europe, is explained in an article by Dr Elena Ramirez.

Unveiling Doggerland: The University of Warwick's Groundbreaking Discovery
The North Sea, a bustling waterway connecting the United Kingdom to continental Europe, hides a profound secret beneath its waves—a vast prehistoric landscape known as Doggerland. Recent research from the University of Warwick has revealed that this submerged realm, often called a 'lost world,' was home to thriving temperate forests more than 16,000 years ago, during the height of the last Ice Age. This finding challenges long-held assumptions about the region's ecology and opens new windows into how life persisted in harsh glacial conditions.
Led by Professor Robin G. Allaby from Warwick's School of Life Sciences, the study analyzed sedimentary ancient DNA (sedaDNA)—genetic material preserved in seabed sediments—from 252 samples across 41 marine cores. These cores were collected along what was once the Southern River in southern Doggerland, a site chosen for its exceptionally well-preserved layers spanning from the Late Pleistocene to the Holocene. The results, published in the Proceedings of the National Academy of Sciences, paint a picture of oak, elm, hazel, and even warmth-loving lime trees flourishing thousands of years earlier than pollen records from mainland Britain suggested.

This revelation not only reshapes our understanding of Ice Age Europe but also highlights the power of innovative techniques like sedaDNA analysis in higher education research. Universities like Warwick are at the forefront, combining molecular biology, geophysics, and computational modeling to unlock submerged histories inaccessible to traditional archaeology.

Doggerland: From Land Bridge to Ecological Heartland

Doggerland was no mere bridge between Britain and Europe; it was a dynamic expanse of rivers, hills, and wetlands that existed until rising sea levels submerged it around 8,000 to 7,000 years ago. Spanning roughly the size of modern-day Denmark and the Netherlands combined, this landmass featured rivers like the Southern River, whose sediments trapped a genetic time capsule of past life.

Previously, scientists envisioned Doggerland as a cold tundra during the Last Glacial Maximum (LGM, approximately 21,000 to 18,000 years ago), with forests only recolonizing post-glacial warming. Warwick's sedaDNA data upends this, showing temperate woodland from the Late Pleniglacial (>16,000 years ago). Lime trees (Tilia), indicators of milder climates, appeared 2,000 years ahead of British records, while the walnut relative Pterocarya — thought extinct in northwest Europe for 400,000 years—persisted here as a relic population.

These microrefugia, sheltered valleys or riverbanks, allowed species to survive glacial extremes, explaining rapid post-Ice Age forest spread — a puzzle known as Reid's Paradox. For higher education, this underscores interdisciplinary approaches: Warwick's team integrated over 178 radiocarbon and 139 optically stimulated luminescence dates to validate DNA signals, distinguishing local deposition (95-98% in fine silts) from reworked material in coarser sands.

SedaDNA: Warwick's Cutting-Edge Tool for Submerged Pasts

Sedimentary ancient DNA represents a revolution in paleoecology, extracting environmental DNA from sediment layers without relying solely on fragile pollen or macrofossils. Warwick researchers shotgun-sequenced billions of reads using Illumina technology, filtering with a triple-database strategy: broad NCBI scans, targeted references for damage patterns, and whole-genome sequencing for phylogeny.

A novel taphonomic model separated 'secure' signals from fine-grained local deposits from 'insecure' ones in coarser layers prone to reworking, such as from the Storegga tsunami ~8,150 years ago. Plant guilds—groups of co-occurring species—revealed ecological shifts: early willow woodlands gave way to open grasslands, then marine grasses like Zostera as inundation progressed.

This methodology, honed in the European Research Council-funded LOST FRONTIERS project, exemplifies how UK universities drive methodological innovation. LOST FRONTIERS, led by collaborators at the University of Bradford, used archaeo-geophysics and simulations to map Doggerland, but Warwick's molecular expertise provided the ecological depth.

Secure vs. Insecure Signals: Fine silts: 95-98% local DNA; Coarse gravels: 60-70% influxed/reworked.
Biodiversity Peak: ~11,000 years ago, declining post-9,000 years ago.
Faunal DNA: Boars in Pleniglacial, bears and terrapins in Allerød interstadial.
Temperate Trees Defying the Ice: Species and Timeline

The study's star findings are the tree taxa. Oak (Quercus), elm (Ulmus), and hazel (Corylus) DNA dates to over 16,000 years ago, predating expected recolonization by millennia. Lime (Tilia cordata) signals warmer pockets, emerging ~14,000 years ago—earlier than Britain's ~12,000-year record.

Pterocarya stenoptera, a southern European relic, was confirmed via phylogenetic analysis, suggesting Doggerland as a northern stronghold. Guild analysis showed 445 taxa clustered into 56 ecological groups, tracking shifts from forested riverbanks to marshes.

Timeline:

Period Key Features

Late Pleniglacial (>16 ka) Temperate trees (oak, elm, hazel); boar DNA

Allerød (~14-12.7 ka) Lime, bears, terrapins

Younger Dryas (~12.9-11.7 ka) Grassland dominance, no cold-steppe species

Early Holocene (~11-8 ka) Biodiversity peak, Storegga tsunami survival

Mid-Holocene (~8-6 ka) Final inundation, marine transition

This chronology aligns with OSL/radiocarbon dates, validating sedaDNA's power.

Resolving Reid's Paradox: Glacial Refugia in Action

Reid's Paradox questions how trees recolonized northern Europe faster than seed dispersal models predict post-LGM. Doggerland's microrefugia—sheltered river valleys—harbored survivors, seeding rapid spread as ice retreated. Pterocarya's persistence exemplifies relict populations in unglaciated lowlands.

For academia, this validates sedaDNA over pollen, which favors wind-pollinated trees and misses local signals. Warwick's taphonomic model sets a standard for submerged site studies worldwide.

Wildlife and Human Prospects: A Habitable Haven?

Beyond plants, sedaDNA detected boars (Pleniglacial), aurochs, deer, bears (Allerød), suggesting food-rich ecosystems. No direct human DNA, but habitable forests predate Maglemosian culture (~10,300 ya), implying earlier Mesolithic precursors.

Doggerland likely hosted hunter-gatherers, explaining sparse British evidence—flooding erased coastal sites. Fishing trawler finds (tools, bones) support this; future dives could yield more.

Warwick and LOST FRONTIERS: Pioneering Submerged Archaeology

The LOST FRONTIERS project (2016-2022, ERC Horizon 2020) mapped Doggerland via geophysics, simulations, and now sedaDNA. Warwick contributed genomics, Bradford led overall. This collaboration exemplifies UK higher ed's strength in interdisciplinary research.

This is the best evidence Doggerland's wooded environment supported early Mesolithic communities.

Professor Robin G. Allaby, lead author.
Faculty of Science, Engineering and Medicine
School of Life Sciences
University of Warwick
Coventry, UK.

Doggerland was a heartland of early human settlement, a refuge for plants and animals.

Professor Vincent Gaffney, co-author.
School of Archaeological and Forensic Sciences
University of Bradford
Bradford, UK.

Paleoclimate Insights and Modern Parallels

Doggerland's refugia inform climate resilience: species survived LGM via local shelters, mirroring today's biodiversity hotspots. As seas rise, studying submerged pasts aids coastal management. Warwick's press release details modeling.

Publication:
R.G. Allaby, R. Ware, R. Cribdon, T.A. Hansford, T. Kinnaird, D. Hamilton, L. Kistler, P. Murgatroyd, R. Bates, S. Fitch, & V. Gaffney
Early colonization before inundation consistent with northern glacial refugia in Southern Doggerland revealed by sedimentary ancient DNA Proc. Natl. Acad. Sci. U.S.A. 123 (11) e2508402123, https://doi.org/10.1073/pnas.2508402123 (2026).

Period	Key Features
Late Pleniglacial (>16 ka)	Temperate trees (oak, elm, hazel); boar DNA
Allerød (~14-12.7 ka)	Lime, bears, terrapins
Younger Dryas (~12.9-11.7 ka)	Grassland dominance, no cold-steppe species
Early Holocene (~11-8 ka)	Biodiversity peak, Storegga tsunami survival
Mid-Holocene (~8-6 ka)	Final inundation, marine transition

Significance
The Doggerland landmass connected North-Western Europe during the Late Pleistocene (approximately 129 to 11.7 ka) and Early Holocene (approximately 11.7 to 8.2 ka) and was likely a key area for Mesolithic peoples. In this study, we show the early presence of temperate species including a species thought extinct, indicating a likely close proximity of refugia with important resource implications for Mesolithic peoples. We also show that ecological turnover combined with sediment turnover can be used to understand the taphonomic processes leading to sedimentary ancient DNA (sedaDNA) deposition and reworking. Using this approach, we show that in alluvial systems fine sediments are associated with secure deposits, but more sandy deposits are at greater risk of giving mixed ecological profiles through reworked sedaDNA.

Abstract
Prior to the formation of the present-day North Sea during the mid-Holocene, North-Western Europe was connected through the Doggerland landmass. While it has been known for the past century that Doggerland was forested, it has not been clear when the onset of forestation occurred or whether the environment was more habitable for humans than surrounding European areas. In this study, we reconstruct the paleoecology of a river system, the Southern River, from the late Late Pleistocene to the late Holocene using sedimentary ancient DNA (sedaDNA) from 252 sediment samples from 41 cores spanning the length of the river system and headwater area. We identify secure and insecure sedaDNA signals by integrating sedimentological and sedaDNA data into a taphonomic model. Secure sedaDNA signals are found in silty and fine sand deposits where 95 to 98% originates from local deposition, but coarse sands and gravels are insecure with 60 to 70% of the sedaDNA associated with mixed ecosystem signals from reworked and influxed sediments. Secure sediments reveal the presence of several temperate tree genera such as Quercus, Ulmus, and Corylus over 16,000 y ago in the Late Pleniglacial, and thermal indicator genus Tilia several thousand years earlier than has been recorded for surrounding European areas. In this area, we also detect an anomalous signal of the genus Pterocarya, considered extinct in the region since the Hoxnian Stage (~400 ka). These observations are consistent with colonization from nearby northern glacial refugia, suggesting a favorable environment in which the cultural Mesolithic could develop.

Holocene Doggerland coastline reconstructions in relation to the Southern River. Coastline reconstruction at A. 10000 cal BP, B. 9000 cal BP, C. 8200 cal BP and D. 7000 cal BP. Southern River shown in red. Maximum ice advances shown for 18.4-17.3 ka (dotted line in pink) and 25.8-24.6 ka (dotted line in blue) (14). Figure adapted from Walker et al. 2020 (10).

R.G. Allaby, R. Ware, R. Cribdon, T.A. Hansford, T. Kinnaird, D. Hamilton, L. Kistler, P. Murgatroyd, R. Bates, S. Fitch, & V. Gaffney
Early colonization before inundation consistent with northern glacial refugia in Southern Doggerland revealed by sedimentary ancient DNA Proc. Natl. Acad. Sci. U.S.A. 123 (11) e2508402123, https://doi.org/10.1073/pnas.2508402123 (2026).

Copyright: © 2026 The authors.
Published by National Academy of Science of the USA. Open access.
Reprinted under a Creative Commons Attribution 4.0 International license (CC BY 4.0)

What this discovery adds to the already overwhelming case against creationism is not merely one more awkward date, but an entire vanished world that fits seamlessly into the scientific account of Earth's history and not at all into biblical mythology. A temperate woodland thriving in Doggerland more than 16,000 years ago, complete with layered sediments, preserved DNA, and a recoverable ecological history, is not something that can be squeezed into a worldview that insists the world itself is only a few thousand years old. The evidence is there because the events really happened, over the timescales science describes.

And that is the recurring problem for creationism. It depends on dismissing not just one line of evidence, but geology, archaeology, palaeontology, genetics, and now sedimentary ancient DNA as well. Each discipline, working independently, converges on the same conclusion: the Earth is ancient, landscapes have changed over immense spans of time, and human beings are recent arrivals in a story that began long before the authors of Genesis imagined the universe into existence.

Doggerland is therefore much more than a drowned land bridge beneath the North Sea. It is another chapter in the real history of our planet, recovered from evidence that can be tested, checked, and rechecked. And, as so often happens, that real history turns out to be far richer, far older, and far more interesting than the simplistic myths creationists are committed to defending.

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