Doggerland, Lyonesse & Cantre’r Gwaelod: The True History Behind Britain’s Drowned Lands

In this episode of the Anglotopia Podcast, Jonathan Thomas is joined by Professor Patrick Nunn — geographer at the University of the Sunshine Coast, honorary professorial fellow at the University of Melbourne, and visiting fellow at Oxford — for a conversation that will permanently change how you look at the map of Britain. Patrick's new book, Whispers from Celtic Seas, published this month by Reaktion Books, makes an extraordinary argument: the legends of drowned kingdoms off the coasts of Wales, Cornwall, Scotland, Ireland, and Brittany are not fantasy at all. They are testimony — eyewitness memories of real catastrophes, passed down by word of mouth for as long as eight thousand years, which would make them quite literally the oldest stories we have. Patrick explains how a conventionally trained scientist came to take myths as seriously as data (via Pacific island oral cultures and Aboriginal Australian traditions), walks Jonathan through the twelve-thousand-year-old Colinda harpoon dredged from the North Sea in 1931 that first revealed Doggerland, describes the Storegga submarine landslide that severed Britain from mainland Europe 8,200 years ago, and unpacks the real histories buried inside the stories of Cantre'r Gwaelod, Lyonesse, and the sea-crossing giants of the Celtic fringe. Along the way: two islands drawn on the 1360 Gough Map that no longer exist, an eighteenth-century Cornish parson who got there first, why stone circles may have been climate mitigation strategies, and the Welsh mudflats whose name translates as "the place of weeping." Links The Book Whispers from Celtic Seas — Reaktion Books (published August 4) Whispers from Celtic Seas — University of Chicago Press (US distribution) Whispers from Celtic Seas — Blackwell's Patrick's Earlier Books The Edge of Memory: Ancient Stories, Oral Tradition and the Post-Glacial World (2018) About Patrick Patrick Nunn — Official Website Prof. Patrick D. Nunn — University of the Sunshine Coast Academic Publications Places & Things Mentioned The Gough Map (c.1360) — Bodleian Library, Oxford Doggerland — Wikipedia overview The Storegga Slide Cantre'r Gwaelod, Cardigan Bay Isles of Scilly Conwy Bay & Traeth Lafan (Lavan Sands), North Wales Outer Hebrides — VisitScotland North Uist & the Monach Islands Crater Lake National Park, Oregon (Mount Mazama) Friends of Anglotopia Club Takeaways Patrick Nunn's central argument is that the coastal legends of Britain, Ireland and Brittany — drowned kingdoms, giants, mermaids, land-making witches — are not invented fiction but encoded memories of real environmental catastrophes, passed down orally for thousands of years. His challenge to skeptics is to explain the implausibility of the alternative: that pre-literate peoples had the leisure time to invent elaborate fictions and consign them to the river of history. The moment of realization came in two stages. Working in the Pacific Islands, Patrick listened to elders recount stories for hours as if reading from a book — proving oral cultures can retain and transmit enormous quantities of information with total precision. Then, after moving to Australia in 2010, he encountered 34 separate groups of Aboriginal stories from around the entire coastline describing when the sea was further out and the ocean rose to cover the land — events that ended around 7,000 years ago, meaning the stories must be at least that old. The Crater Lake example is Patrick's clinching argument. When European settlers reached Oregon, the Klamath people told them a mountain once stood where the lake is, that two gods fought, and that the mountain collapsed. Mount Mazama erupted and collapsed 7,600 years ago. There is no alternative explanation for how that story survived. The Colinda harpoon — a twelve-thousand-year-old carved deer antler dredged from the floor of the North Sea by a Lowestoft trawler in 1931 — was the first widespread realization that people had once occupied the seabed between Britain and Europe. That landmass is now known as Doggerland, named for the Dogger Bank fishing ground. At the coldest point of the last ice age, around 20,000 years ago, the ocean surface stood roughly 400 feet (125 meters) lower than today. Doggerland was not a "land bridge" — its inhabitants did not think of themselves as living on a bridge. It was simply a vast inhabited landmass supporting fishing, hunting, and free movement of people, animals, and vegetation between what is now mainland Europe and the British Isles. Around 8,200 years ago, a huge section of the Norwegian continental shelf collapsed into the ocean depths — the Storegga Slide — displacing an enormous volume of water and generating tsunamis that struck Shetland, Orkney, Scotland, and the eastern seaboard of the British Isles. Driving south through the North Sea, it smashed passages through the already-shrinking remains of Doggerland. That event, in effect, created the British Isles. The Welsh legend of Cantre'r Gwaelod in Cardigan Bay — sixteen cities lost when King Gwyddno's steward got drunk and forgot to close the sluice gates — has a genuine kernel of truth. People certainly lived in that area 10,000 to 12,000 years ago when sea levels were tens of meters lower, and those places were genuinely submerged. The drunken steward is later decoration added to make the story entertaining; the submergence is the empirical core. The Gough Map of around 1360 — the oldest surviving map of Britain, held at the Bodleian Library in Oxford — shows two islands in Cardigan Bay that do not exist today. Patrick doesn't believe the islands still existed in the 1360s, but the memory of them was sufficiently compelling that the cartographer drew them anyway. Patrick's explanation for giants is one of the book's most striking ideas. When a memory became too implausible for later generations — people walking across what is now thirty miles of open ocean — the story adapted rather than died. The walkers became giants, and the giants grew larger as the ocean gaps widened. Giants weren't invented; they were brought into narrative tradition specifically to keep true memories credible. Patrick's two recommended places to stand and feel this history: Conwy Bay in North Wales, where the mudflats at its head are called the Lavan Sands, whose old name means "the place of weeping"; and the Outer Hebrides, particularly around North Uist, where 19th-century collectors recorded remarkably detailed stories about the Monach Islands — including the names of the last people to cross the land connection and those who drowned attempting it. That connection was submerged 6,800 years ago. Soundbites "I don't think people five hundred years ago or even five thousand years ago had the leisure time to develop elaborate fictions and then consign them to the river of history and pass them down through the ages." — Patrick on why he takes ancient stories seriously. "When we look at stories of mermaids and giants, we're really looking into the minds of people hundreds, even thousands of years ago — the way they conceived the world and the way they encoded their observations of deep time." — Patrick on what folklore actually preserves. "It became clear to me that people in oral cultures are in fact able to retain and organize and pass on huge amounts of information without the benefits of being able to write them down." — Patrick on the Pacific Islands research that changed his thinking. "These stories by default had to be at least seven thousand years old. And that really blew my mind, as I guess it would that of any conventional scientist. But I was always trained: let the data speak." — Patrick on the Aboriginal Australian stories of coastal drowning. "That volcano erupted seven thousand six hundred years ago. There is no alternative explanation for the Klamath story having been passed on since this cataclysmic event." — Patrick on Crater Lake, Oregon. "Why are you skeptical that a story can be passed down for thousands of years? You're skeptical because it doesn't happen today. We've forgotten, if you like, what our ancestors in oral societies did." — Patrick's response to skeptics. "That event, if you like, created the British Isles. It destroyed the land connection between the British Isles and mainland Europe around about eight thousand two hundred years ago." — Patrick on the Storegga Slide. "We laugh about the drunken steward and the duties he failed to perform. But the essence of that story is that there once existed inhabited places on the floor of what is today Cardigan Bay, and these places became submerged. And of course that's absolutely true." — Patrick on Cantre'r Gwaelod. "Those people became giants because that was the way you could rationalize these stories and make them credible to each new generation. And the giants became bigger and bigger through time because the ocean gaps became wider and wider." — Patrick on the origin of giants in Celtic folklore. "The old English name for the Lavan Sands means the place of weeping. There is so much sadness associated with the loss of land in the past, and some of that sentiment is preserved in place names." — Patrick on Conwy Bay, North Wales. Chapters 00:21 Introduction — Drowned kingdoms, giants, and the claim that these are the oldest stories we have 01:51 Welcome, Patrick — Anglotopia's first guest from Australia, and hello from the past 02:19 The Central Argument — Why these legends are memory, not invention 04:17 From Geographer to Folklorist — What made a scientist take myths as seriously as data 05:04 The Pacific Islands — Listening to elders recite for hours as if reading from a book 05:58 Aboriginal Australia — 34 groups of stories about coastlines that drowned, and what that proves 07:45 From Australia to the Celtic Fringe — How The Edge of Memory led to this book 09:53 The Skeptic's Objection — Does oral tradition degrade like a game of telephone? 12:06 Crater Lake, Oregon — The Klamath story and a volcano that erupted 7,600 years ago 13:46 The Colinda Harpoon — A 12,000-year-old antler spear dredged from the North Sea in 1931 15:37 Doggerland — Naming the drowned world beneath the North Sea 16:11 Life in Doggerland — 400 feet lower seas, free movement of people and animals, fishing and hunting 18:09 The Storegga Slide — How a Norwegian landslide 8,200 years ago created the British Isles 20:01 What Happened to the People? — Drowning, retreat to higher ground, and the normalization of submergence 21:34 Why Every Culture Has a Flood Story — Different events, shared memory of a world transformed 22:23 Lake Michigan — Jonathan wonders about flood legends in his own backyard 23:05 Wales: Cantre'r Gwaelod — Sixteen cities, King Gwyddno, and a drunken gatekeeper 26:13 The Gough Map — Two islands in Cardigan Bay drawn in 1360 that no longer exist 27:37 Cornwall: Lyonesse — The Arthurian drowned land off Land's End 28:01 William Borlase — The 18th-century Cornish parson who took the stories seriously 29:56 The Scilly Isles — Once a single island, now ten, and the trauma of being cut apart 32:08 Giants — Why implausible memories became giants, and why the giants grew 35:28 Method — How to tell a story encoding real events from a good story 37:38 Contemporary Resonance — What these stories teach us about climate change today 40:09 What Else Are We Not Listening To? — Volcanoes, seawalls, and mitigation 41:39 Stone Circles as Climate Mitigation — A genuinely startling idea 43:15 Where to Stand and Feel This History — Conwy Bay and the Lavan Sands, "the place of weeping" 44:46 The Outer Hebrides — North Uist, the Monach Islands, and stories recorded in astonishing detail 46:32 Alexander Carmichael — A tall man wading the fords, and the couplet that moves Patrick most 48:31 Wrap-Up — Whispers from Celtic Seas, out August 4 from Reaktion Books Video Version