The Coligny Calendar is the name given to a fragmented bronze plaque discovered in 1897 near Coligny in France. It is a calendar that has been attributed to the Celtic Sequani tribe. It is dated to the 2nd century AD, written in Roman script in Gallic and is the longest known document in that language.
Paul Dunbavin in his Atlantis of the West proposed that the Coligny Calendar might be considered a lunisolar calendar. Some years later in 2005 he returned to the subject in Under Ancient Skies and devoted Chapter 5 plus Appendices A & B to a discussion of Critias 119d, which relates how the kings of Atlantis met alternatively every five and six years. Dunbavin suggests that this is reflected in the Coligny Calendar and that it possibly had antecedents that would bring its functions back to the time of Bronze Age Atlantis. Dunbavin’s reaction to the Calendar is best quoted – Now it is this passage more than any other that convinces the present author (Dunbavin) of the authenticity of the Atlantis myth“. He touches on the subject again in his latest offering, Towers of Atlantis  and Prehistory Papers .
Alexios Pliakos, a Greek student of ancient calendars, presented a paper to the 2008 Atlantis Conference entitled A hidden Calendar in the Atlantis Story. He focused on the same Critias 119d text and like Dunbavin has independently concluded that the reference to the five and six years is strong evidence “that Atlantis did not lie in Plato’s imagination.”
There have been attempts to link the Coligny Calendar with the much earlier stone engraving found at Knowth near Newgrange in Ireland(a). An extensive and more speculative discussion of the Calendar is to be found on a New Zealand website(b). Perhaps the most exotic explanation for the source of the Calendar, questions the presumed Celtic origins and offers reasons to consider a claim that it can be traced back to ancient India(c).
(a) https://www.sequanicalendar.com/egg.html (Link broken Nov. 2018)
A Lunisolar Calendar is hidden within the Atlantis story according to a paper presented to the 2008 Atlantis Conference by Alexios Pliakos. Lunisolar calendars have been in use since ancient times in many cultures(b), indicating the phases of the moon as well as the passage of time through the solar year.
Pliakos believes[750.631] that Critias 119 d2-d4, which refers to the convening of the Atlantean kings every five and six years, contains a previously unknown lunisolar calendar of 11 years duration with an accuracy of 0.09 days per year. As he also claims that it could have been applied in both 9600 BC and 12th century BC, it cannot be used to date the time of Atlantis. However, he points out that this 11 year lunisolar calendar is in conformity with the development of calendars generally adding to the improbability of the Atlantis story being an invention.
In a recent paper by Ashley Cowie, he explains how the Hittite shrine of Yazilikaya, at least in part, could have been used as a lunisolar calendar. Eberhard Zangger, an expert on the ancient history of the region, has also identified astronomically related features at the site (d).
Paul Dunbavin, in his Atlantis of the West[0099.319], has offered a speculative explanation for the fifth and sixth year meetings of the Atlantean kings based on the fragments that make up the French ‘Coligny Calendar’(a) .
David Ohrenstein has a short blog on the significance of ‘five and six’ from megalithic times to that of the Egyptians and later the Maya(c).
Wales, or more precisely an area off the west coast of Wales, is considered by Paul Dunbavin to be the location of sunken Atlantis(c). His well researched books  investigate in detail the mythology of the region together with the underwater topography of the Irish Sea and relates these to Plato’s narrative. It is generally accepted that at the end of the last Ice Age, Ireland and Britain were joined and that the Irish Sea was a much reduced inland lake. As the ice melted the seas gradually advanced separating the higher land into what are now geographically known as the British Isles. A memory of these events is possibly contained in the ancient Welsh Triads(a), where reference to great floods can be found. However, Dunbavin’s attempt to link these floods with the inundation of Atlantis is not fully convincing. Similar floods occurred all over the world including the Baltic, Caribbean and Indonesia but in common with Wales there is no connection between any of them and a war with Athens or Egypt.
Nevertheless, in October 2004 the British newspaper,The Guardian, perhaps slightly tongue-in-cheek, compared some of Wales’ features with Plato’s description of Atlantis, although the reference to elephants ended the comparison (b).
The Atlantis Researches , by Paul Dunbavin, discusses in great detail the myths of the British Isles and, in particular, the Welsh legends that refer repeatedly to sunken kingdoms. Dunbavin concludes that these myths are a memory of a submerged Neolithic civilisation around the coasts of the British Isles.
The author is convinced that the destruction of this civilisation was the result of a change in the Earth’s axis, as a consequence of a cometary impact, around 3100 BC. This date coincides with the conclusions of other writers who have also identified this date as one of global cataclysmic events. However controversial his ideas may be, the book is well worth a read.
This book was republished in 2003 as Atlantis of the West.
>James came to public attention when, in collaboration with Nick Thorpe, Nikos Kokkinos, Robert Morkot and John Frankish, he authored Centuries of Darkness  in which he explored the problems of the chronology of the Mediterranean and Near East in the second millennium BC. It generated much controversy, which continues as the authors’ website(c)(d) demonstrates.<
The following years saw the production of an impressive three-volume work by David Rohl offering similar ideas on a New Chronology for the region. In fact, James and Rohl had collaborated until they had divergent views regarding the identification of the biblical Shishak, Rohl favouring Ramesses II, while James opted for Ramesses III.
James has also been studying the Atlantis question since the early 1970’s. Paul Dunbavin recounts that James had originally favoured Megalithic Britain as Atlantis. Francis Hitching in The World Atlas of Mysteries notes how James calculated the date of the demise of Atlantis as 3600 BC. He arrives at this by accepting the commonly agreed date for the beginning of Egyptian civilisation of 3100 BC. He then adds the 1,000 years, which Solon was told by the Egyptian priests, was the time that had elapsed between the Atlantean Athenian war and then arbitrarily subtracts 500 years to compensate for an assumed nationalistic exaggeration of Egypt’s antiquity; a habit common to many ancient kingdoms.
However, when he finally published his work on the subject he controversially offered a site in Anatolia in western Turkey as his preferred location for Atlantis. Unfortunately, he has been unable to obtain permission from the authorities to dig at the site and hopefully substantiate his theory. The book is supported by a website(a).
James was highly vocal in debating the dendrochronological dating of the Uluburun shipwreck discovered in 1982 off southwestern Turkey. The initial date given was 1315 BC, later revised to 1305 BC but due to a lack of bark on the piece of wood tested a definitive date was impossible. Even if the bark had been attached it would still only have provided the date that the tree had been felled not the date of the shipwreck(b). Subsequently, the more imprecise radiocarbon dating gave a date of ‘around’ 1300 BC.
James is also co-author, again with Nick Thorpe, of Ancient Inventions , which is a 672-page tome that offers a fascinating account of the inventive capabilities of ancient civilisations. In this 1994 book, he comments that “Plato’s yarn is largely a work of fiction” [p.455]!!!
Paul Dunbavin (1954- ) is a data and business analyst. “His interest for over 35 years has been cross-disciplinary research into prehistory, which he has occasionally published in his books and various articles and papers.”
He is the author of controversial but clearly well researched books relating to the ancient history of Britain. In one of these he identified the Picts of Scotland as being originally from the Baltic. In another he investigated the possible origins of Plato’s story of Atlantis. Using mythological, geological and archaeological sources he concluded that an asteroid or comet collided with the Earth around 3100 BC resulting in the tilting of the Earth’s axis. Dunbavin argued that this impact caused dramatic climate and sea-level changes that led to the submergence of a Neolithic civilisation on a low-lying plain off the coast of Wales. He believed that this destruction was the inspiration for the Atlantis legend. David Furlong claimed to have independently arrived at the same conclusion.
In 2005, Dunbavin published another volume on ancient catastrophes and their possible connection with cometary impacts or near collisions. In this connection, he briefly refers to the work of George F. Dodwell.
In 2019, Dunbavin expanded his website, which also includes a more extensive review of Dodwell’s work(c). 2019 also saw the publication of his latest book, Towers of Atlantis . There is more information about this and his other books on his website(a) , which also includes links to other related sites(b) .
Once again, Dunbavin has returned to the subject of the British Isles during the Neolithic period and their possible association with Plato’s story of Atlantis. He draws on the ancient Egyptian concept of a paradisaical afterlife comparable with the Greek ‘Elysian Fields’, both believed to be located in the far west. These notions are seen by Dunbavin to have possible parallels in Plato’s description of the Plain of Atlantis.
The author highlights the value of mythology, which he employs in conjunction with classical writers such as Herodotus, Diodorus Siculus as well as others to lead us to his considered belief that the Irish Sea prior to its eventual inundation after the last Ice Age had been home to the Plain of Atlantis, stretching from the island of Anglesea to the Isle of Man. This book should be read in conjunction with his previous offering, Atlantis of the West. Rather than wild speculation, Dunbavin has again offered evidence, although subjectively interpreted, which offers a coherent hypothesis.
Dunbavin updates his website from time to time, the latest was November 2019. Anyone interested in his theories should check his site regularly.
>In 2020, Dunbavin published Prehistory Papers , “which provides a permanent repository for the various articles or papers originally published on the author’s website; together with some older articles; they expand on the cross-disciplinary research in the author’s earlier books.“ <
George F. Dodwell (1879-1963) was a leading Australian astronomer, who made an extensive study of ancient gnomons and discovered that they deviated from what had been anticipated. A gnomon is the part of a sundial that casts the shadow. He concluded that there was consistent evidence that the tilt of the earth’s rotational axis was altered around 2345 BC. This view supported those that have claimed that the poles shifted within the memory of man, possibly as a result of a close encounter or impact with an extraterrestrial body such as a comet. Some have gone further and attribute the destruction of Atlantis to this clash. Dodwell’s complete work on the subject can now be read on Barry Setterfield’s website(a).
Dodwell, a devout Christian, concluded that it was this sudden shift of the earth’s axis that led to the Flood of Noah. Reinaud de Jonge proposed a similar linkage between the 2345 BC cosmic encounter and the biblical Deluge. He also claimed that a large collection of petroglyphs at Mougau-Bihan in Brittany were inspired by this event.
Rene Noorbergen (1928-1995) mentions in his Secrets of the Lost Races [612.20] that Dodwell wrote to Professor Arthur J. Brandenberger of Ohio State University, outlining his theory in the following manner; “I have been making during the last 26 years an extensive investigation of what we know in astronomy as the secular variation of the obliquity of the ecliptic. From a study of the available ancient observations of the position of the sun at the solstices during the last three thousand years, I find a curve which, after allowing for all known changes, shows a typical exponential curve of recovery of the Earth’s axis after a sudden change from a former nearly vertical position to an inclination of 26½ degrees, from which it was returned to an equilibrium at the present inclination of 23½ degrees during the interval of the succeeding 3,194 years to A.D. 1850. The date of the change in the Earth’s axis, 2345 B.C., is none other than that of the flood recorded in the Bible, and the resulting conclusion is that the Biblical account of the flood as a universal one, together with its story of Noah’s Ark, is historically true.”
Dodwell was also impressed by the work of the creationist, George McCready Price (1870-1963), who had also concluded that the Earth’s axial tilt had been altered as a result of an impact with a celestial body. Price also linked the event with the biblical Deluge.
Dodwell referred to a paper of F.S.Richards on the orientation of the Temple of Ammon at Karnak(b), which indicated an anomalous obliquity of the ecliptic of 25°9’55”. This led to considerable debate regarding the age of the temple. William Fix drew attention[871.264] to the widespread reuse of very ancient sacred sites by successive cultures, which might explain the incompatibility between the apparent age of the most recent temple and the greater antiquity suggested by the obliquity of the ecliptic. Alternatively, it might also indicate an encounter with an extraterrestrial body that affected the Earth’s axis and caused widespread destruction, including, according to some theories, the destruction of Atlantis!
S.F. Wells published a paper(h) on Graham Hancock’s website in which he investigated the Avebury stone circle and its associated monuments and found evidence that they “show knowledge of past Polar positions”.
>In the interests of balance, I must refer readers to an extensive 2013 paper(f) by a creationist, Dr Danny Faulkner, who has cast doubts on Dodwell’s conclusions. More recently Paul Dunbavin also published a critique of Dodwell’s work in Prehistory Papers [1758.71]. This essay was written a few years ago and is now available on his website(k).<
Another interesting comment is offered by Barry Setterfield, who wrote(a) that “ Dodwell has assumed here that the original axis tilt of the earth, before 2345 B.C., was nearly upright. For that reason, he supposed a very strong impact was necessary to jolt the earth from that position to its current 23.5-degree tilt. This is why a number of astronomers have rejected Dodwell’s work in this area. However, if the axis tilt was greater than its current axis tilt before 2345 B.C., then an impact of much less force would have been required to restore the earth to a slightly more upright position. The evidence for this greater axis tilt may be seen in the evidence of the ice age which covered most of Europe prior to 2345 B.C.”
Malcolm Bowden, the author of True Science Agrees with the Bible, also wrote a pamphlet supporting Dodwell’s findings and later produced a YouTube video explaining in detail Dodwell’s axial tilt theory(g). Paul D. Ackerman offers another review of Dodwell’s work from a creationist viewpoint(j). Ackerman is an ardent supporter of the concept of a young Earth .
In 2011, Mike Baillie, the renowned dendrochronologist, gave a PowerPoint presentation(d) at the Quantavolution Conference in Athens, which offered tree-ring evidence that clearly demonstrated an ‘event’ in 2345 BC, which has counterparts in early Chinese and Middle East records suggesting a cometary encounter/impact! Baillie also notes that Isaac Newton and Edmund Halley both thought that Archbishop Ussher’s Flood of 2349 BC was due to a comet.
More recently, Andrew Bourmistroff, a Russian researcher, has determined that the orientation of the Great Pyramid at Giza is off by 9.85 degrees west of true north(e). The full significance, if any, of all these details has yet to be fully determined.
Britain as the home of Atlantis has been claimed by many writers and not without undertones of nationalism by some of the British authors. Nevertheless, support for the idea has been offered by a number of the more disinterested researchers. Probably the first to advance this idea was John Wallis in 1700, who proposed that the Atlantis story had been corrupted over time and was a reference to the destruction of the landbridge that had existed between France and England, leaving a British Atlantis more isolated (The original Brexit!). It was nearly a century later that the idea was taken up by Thomas Pennant. More than another century passed before Cooper, Spence, Beaumont and Calestani produced related theories. Fast forward to the 21st century, when Donald Ingram identifies the Wessex II culture as Atlantean and Melville Nicholls considers Britain to be one of the Atlantean islands referred to by Plato.
The precise location, the exact date and the probable cause of the destruction of Atlantis are the basis for a range of theories. There is general acceptance that following the deglaciation at the end of the last Ice Age vast regions of low-lying land that had linked Ireland and Britain to mainland Europe were gradually flooded.
One school of thought is that these flooded regions contained Atlantis, of which the most extensive was in the North Sea and is now known as Doggerland. Other offshore locations proposed for Atlantis are the Celtic Shelf (Gidon, Steuerwald & Koudroiavtsev) and the Irish Sea (Dunbavin). These lands had been settled and following the inundations its inhabitants forced to retreat to the higher ground of what is modern Europe and the British Isles.
>David L. Hildebrandt in Atlantis-The Reawakening  proposes a reworking of the ‘Atlantis in Britain’ theory with some new perspectives. For me, his dating, location and identity of the Atlanteans does not ring true, particularly why Stone Age people in Southern Britain would want to launch an attack on Athens, over 2,000 miles away, a city-state which did not even exist at the time. Those early Britons did not have the wheel, yet Plato tells us that the Atlanteans had chariots!<
E. J. de Meester on his now defunct website postulated a link between Stonehenge and Atlantis(b). After arbitrarily dividing Plato’s dimensions by ten, he suggested that the plain described by Plato lay in a rectangle between Salisbury and Chichester.
The Atlas Mountains stretch for over 1,500 miles across the Maghreb of North-West Africa, from Morocco through Algeria to Tunisia. The origin of the name is unclear but seems to be generally accepted as having been named after the Titan.
Herodotus states (The Histories, Book IV. 42-43) that the inhabitants of ancient Mauretania (modern Morocco) were known as Atlantes and took their name from the nearby mount Atlas. Jean Gattefosse believed that the Atlas Mountains were also known as the Meros and that a large inland sea bounded by the range had been known as both the Meropic and the Atlantic Sea. Furthermore, he contended that Nysa had been a seaport on this inland sea.
*The Maghreb, or parts of it, have been identified as the location of Atlantis by a number of commentators. One, Ulrich Hofmann concluded his presentation to the 2005 Atlantis Conference with the comment that “based on Plato’s detailed description it can be concluded that Atlantis was most likely identical with the Maghreb.”[629.377] Furthermore, he has proposed that the Algerian Chott-el-Hodna has a ring structure deserving investigation.*
Lyonesse is a mythical land between Cornwall and the Scilly Isles that reputedly sank into the sea. Ancient maps indicate that most of the Scillies were united in Roman times(a) noted by Peter Stanier in his book about the region. Legend has it that it contained 140 temples. Mordred is said to have fought his final battle with King Arthur at Lyonesse. This ancient tale has been regularly linked with the destruction of Atlantis.
There is a parallel Breton legend of Kêr-Is (Ker-Ys in French).
A group of rocks called the “Seven Sisters” lies six miles (10 km) off Land’s End, the southernmost tip of Britain. According to legend, these rocks mark the site of a kingdom that once linked Britain to France. The site description fits in with the Cornish myth of the kingdom of Lyonesse – also known as the City of Lions. In the 5th century A.D., Lyonesse was inundated and disappeared beneath the sea. The legend has it that there was only one survivor. Since then, local fishers have caught pieces of buildings and other remains in their nets. They claim that these come from Lyonesse.
Henry Beckles Willson in a 1902 booklet claimed that land now lost, once extended from Land’s End to the Scilly Isles. Contrast that with a speculative map in Lucile Taylor Hansen’s book The Ancient Atlantic, which shows Lyonesse as a large landmass west of the Scillies. She also informed us that the island of Tresco, which today is roughly 2 miles long and a mile across at its widest, had a circumference of ten miles in 1538.
A team of Russian scientists were hoping to answer the two and a half thousand-year-old mystery regarding Plato’s Atlantis, with an investigation of the underwater ‘Celtic Shelf’ beyond the Scilly Isles. Viatcheslav Koudriavtsev, of the Moscow Institute of Meta-history, has used a re-interpretation of the classical Greek texts to locate the possible position of the fabled ancient lands. It is claimed that in the 1990s the British authorities were set to issue a six-week licence for the exploration of Little Sole Bank, a conical submerged hill lying only 50m below the surface approximately 100 miles south-west of the mainland, but apparently, due to a lack of funding, nothing has been heard of the project since.
In 2012 the ‘micronation’ self-styled as the Principality of Lyonesse declared its ‘independence’(b)(c).
Also see: Micropatrology