Jay Yoon is the American author of the short ebook, Atlantis Shrugged  , also known as Atlantis: The Underworld(b). His views on Atlantis are also available on the Internet(a) where he supports the Caribbean Basin as the location of Atlantis, which he believes was submerged around 9600 BC.
He claims that originally the Basin, although nearly 13,000 feet below sea level, was kept dry by the range of surrounding mountains which was subsequently breached by the earthquake referred to by Plato. Yoon outlines his theory in the form of a Platonic Dialogue, in which the participants are Solon, Aristotle and Critias.
For anyone interested, Yoon has supplied the following co-ordinates for his chosen location for Atlantis – 17°09’54.95″ N 65°03’32.64″ W.
In my opinion his basic idea is fanciful. Why would Yoon’s Atlanteans send an army climbing over 13,000 feet to launch an attack in the eastern Mediterranean, over 5,000 miles away, at a time when suitable ships did not exist in order to attack Athens and Egypt, which did not exist either? Would it not have made more sense to expand into North and/or South America from the Caribbean?
It is more likely that if a dry Caribbean Basin did exist in 9600 BC, it was flooded by the rising sea levels resulting from the melting icecaps.
In March & April 2016, Yoon, then Brad and later Brady Yoon, rehashed his Caribbean theory on the Ancient Origins website(e). In one(d) he discusses the Deluge and its possible connection with the demise of Atlantis. In the concluding paragraph of the other(c) he admits that “all of this speculation could be entirely baseless”, a view I enthusiastically endorse.
Nevertheless, Yoon has written an interesting article(g) on the origin of Utah’s Great Salt Lake. Originally believed to be the result of the biblical Deluge, today it is claimed that the salt came from tributary rivers which remained after the water evaporated. Yoon offers strong evidence that the salt came from seawater and by extension reinstating the Deluge theory!
Jason Colavito has published a critique of some of Yoon’s earlier posts on Ancient Origins(f).
Younger Dryas also known as Dryas III was a mini Ice Age that lasted from around 10,700 BC until around 9600 BC. It is named after a flower that flourished during this relatively short period. In Ireland the period is known as the Nahanagan Stadial and in Britain as the Loch Lomond Stadial. For about thirteen hundred years the glaciers had been slowly retreating until within a short time-span temperatures dropped and they began to advance again. The cause of this cooling is not absolutely clear. One view is that a sudden release into the North Atlantic of vast quantities of fresh water that had been contained by huge ice dams is assumed to have closed down the Gulf Stream, resulting in a twelve hundred year lowering of global temperatures. There is evidence that the change only took one or two decades. The same threat is said to exist today with the possibility of the melting of the Greenland ice cap.
The most recent theory, by Firestone, West and Warwick-Smith, links the onset of the Younger Dryas with the explosion of a comet over North America that led to the extinction of many species, the collapse of the Clovis culture(a)(b) as well as the creation of the Carolina Bays.
A 2014 paper(g) entitled Nanodiamond-Rich Layer Across Three Continents Consistent with Major Cosmic Impact at 12,800 Cal BP by Charles R. Kinzie et al., has developed further the idea of this event being associated with the Younger Dryas. In a similar vein is an article(h) from Megan Gannon.
A recent application of archaeoastronomy by Martin Sweatman and Dimitrios Tsikritsis led them to conclude that the carved symbols at Göbekli Tepe recorded an encounter involving the explosion or impact of part of Encke’s Comet around 13,000 years ago, which triggered the Younger Dryas Event that provided the impetus for the Neolithic Revolution. Sweatman later expanded their work in his book Prehistory Decoded  and in an article on the Ancient Origins website(m).
Kevin A. & Patrick J. Casey maintain that a globally catastrophic event occurred 13,000 years ago(l). The kernel of their theory is that originally the Earth had two moons that at some later point collided, producing our current Moon, while the remnant of the second one eventually exploded over North America kick-starting what we refer to as the cooler Younger Dryas period. They are adamant that it was not a comet or asteroid that caused the devastation, and so clash with the work of Richard Firestone and his colleagues.
In 2015 a paper constraining the impact date to within 100 years using Bayesian statistical analyses, now proposed as 12,835 -12,735 years ago(j).
Coincidentally, Professor Emilio Spedicato independently arrived at the conclusion that it was a cometary impact in the North Atlantic that was responsible for the Younger Dryas. Subsequently, when temperatures rose again it resulted in the flooding of vast areas of low-lying landmasses that in Spedicato’s opinion, included Atlantis, which he locates in Hispaniola.
Conflicting evidence regarding the possibility of the Younger Dryas being caused by such an impact is impartially outlined on the internet(c).
December 2014 saw Graham Hancock raising the issue of a cometary cause for the Younger Dryas and its possible association with ancient Egypt(f).
The November 2013 issue of the BBC Focus magazine (p.30) had a brief article on the impact theory, noting that the northern hemisphere saw a drop of as much as 15°C around 11,000BC. In the absence of a suitable impact crater there is still much scientific scepticism(d).
However in early 2017, further possible evidence of an impact at the start of the Younger Dryas was offered by a team led by Christopher Moore of the University of South Carolina, when they identified a distinct layer of platinum in the soil that coincided with the start of YD. Commenting on this anomaly Moore noted that “Platinum is very rare in the Earth’s crust, but it is common in asteroids and comets.”(i)
In early 2018, two papers were published online(k), reinforcing the YD impact theory and adding evidence that the event resulted in a conflagration that “may have consumed – 10 million km2, or – 9% of Earth’s terrestrial biomass”.*Related to this is a paper by Andrew Collins that draws attention to the ‘Usselo horizon’, a charcoal-rich layer of between 1 and 8 inches, found on all continents, indicating widespread fires, now dated to 12,900 years ago(n).*
Ice cores from Greenland indicate a further cooling period circa 6200 BC that may be related to the abandonment of many Neolithic settlements during this period. Other periods of abrupt climate change have been identified from 3800 BC to 3500 BC and 2800 BC to 2000 BC.
The fact that Plato’s apparent date for the demise of Atlantis, circa 9600 BC, roughly corresponds with the current, best estimate for the date of the Younger Dryas is interesting but unfortunately not conclusive proof of any direct connection. In the absence of any supportive archaeological evidence, a linkage between Atlantis and the Younger Dryas will have to remain a matter of faith rather than fact. Interesting but inconclusive.
Recent discoveries in northern Sudan of dozens of skeletons, the majority of whom were apparently killed by flint-tipped arrows, have led to the suggestion(e) they were the result of food shortages resulting from the Younger Dryas that in turn led to warfare over diminished food availability.
(c) http://blogs.nicholas.duke.edu/thegreengrok/climatedebate/ (offline Dec. 2016) See: https://web.archive.org/web/20130310032309/http://blogs.nicholas.duke.edu/thegreengrok/climatedebate/
Göbekli Tepe is a site in South-East Turkey, just north of the Syrian border near the town of Sanliurfa that has been excavated for the past 15 years. The work has been led by the German archaeologist, the late Klaus Schmidt, who has dated the site to 9600 BC, eerily coinciding with Plato’s apparent date for the war with Atlantis. In fairness to those who accept Plato’s date, the existence of the monuments at Göbekli Tepe at such an early date at least indicates the possibility, of Plato’s date being correct. However, I am not altogether happy with the date assigned to the site, as I cannot imagine how the stones were carved to such a high standard without metal tools, a development still some thousands of years in the future. Dating details are available online(ar).
*There is now a claim that another site, Körtik Tepe, may be even older(av), with a suggested date of 12,500 to 11,700 years ago!*
A paper by Schmidt on the development of agriculture at the time of Göbekli Tepe is freely available online(ao)
Sanliurfa mentioned above, was ancient Urfa and is suggested by David Rohl as the original Ur of the Chaldees, the birthplace of Abraham.
The site consists of megalithic stone circles with T-shaped uprights on some of which are carved a variety of animals. What is most peculiar is the fact that these monuments were completely buried after hundreds of years of use. One suggestion is that that the site is pre-diluvian and was buried by the biblical Flood!
A paper by Alastair Coombs entitled The Atlantis Twins offered further thoughts on possible prehistoric references, including a suggested link with Göbekli Tepe. This was expanded and retitled Göbekli Tepe & the Atlantis Twins and later published on Graham Hancock’s website(aq).
Schmidt ws convinced that this site marked the transition from a hunter-gatherer to an agricultural society. An interesting article is to be found in the March/April 2009 issue of Saudi Aramco World and on its website(a).
The consensus now is that Göbekli Tepe is the oldest known temple in the world, predating the temples of Malta by an astonishing 4,000-5,000 years. This, of course, is based on the dating offered by Schmidt, which may require revision. However, Adam’s Calendar(c) in Mpumalanga, South Africa, has been dated to over 70,000 BC, which, if true, would throw an even greater number of theories onto the scrapheap.
However, the idea that Göbekli Tepe is a temple site has been challenged by Professor Ted Banning at the University of Toronto, who has claimed(j) that it was ‘one of the world’s biggest garbage dumps’ suggested by the amounts of bones, tools and charcoal found there. Instead, he claims that the structures were homes, I personally find this unconvincing. Needless to say Schmidt was also unhappy with Banning’s contention and was writing a rebuttal of his claim, which I’m not sure if this was completed or published.
Readers might be interested in comparing the monuments of Gobekli Tepe with the taulas of Menorca(d)at the far end of the Mediterranean. Some of which are also to be found in clusters.
Studies have apparently confirmed astronomical alignments at these sites(i). A German site has highlighted a possible connection(ac). The most extensive publication on the subject of taulas was published in 1995 by Hochsieder & Knösel, in French.
Studies have apparently confirmed astronomical alignments at these sites(i). National Geographic magazine published a leading article on the site in June 2011, which can be read online(e). A new website devoted to Göbekli Tepe with more images is worth a visit(f). Another well illustrated site(k) has drawn attention to the possibility that the animal images at the site match constellations at the time they were carved. It will be interesting to see how this particular investigation proceeds.
Nevertheless, another temple site 30 km to the northwest, Nevali Çori(g), dated to 6,000 BC also has T-shaped pillars but in my mind it raises the question of how the same form of monument would still be in use three and a half thousand years later. I would expect some stylistic evolution unless of course the dating of the two sites should be closer.
Another large site designated as Karahan Tepe(t), which is 63 km east of Sanliurfa has hundreds of pillars, many T-shaped, but the site has yet to be excavated. Page 6 of a pdf file(h) will give you more details.*In September 2019, a start on the excavation of the site was announced(aw).*
A Norwegian website(l) has some little-seen images of the Göbekli Tepe site.
A new suggestion has now emerged linking Easter Island and the ongoing discoveries at Göbekli Tepe. This seems to date back to early 2010(m) and has now been given greater prominence in Robert Schoch’s most recent book, Forgotten Civilization. A 2013 article(n) by Schoch includes a report of a recent visit by him to the site.
In July 2013 a paper(o)(p) by Giulio Magli explores the possibility that Göbekli Tepe had been constructed to “celebrate and successively follow the appearance of a new, extremely brilliant star in the southern skies: Sirius.” Sirius is the brightest star and had significance for ancient Egyptians and Greeks and features in Robert Temple’s theory regarding the astronomical knowledge of the Dogon people of Mali.
Magli’s suggestion has been dismissed in a paper(q) by Andrew Collins and Rodney Hale, who have made the alternative proposal that if there was an intended astronomical orientation, a more likely candidate was the star Deneb in the Cygnus constellation. Collins has already explored the significance of that constellation in the ancient cultures of America, Egypt and Britain in The Cygnus Mystery. In 2014 Collins devoted an entire book to the Göbekli Tepe discoveries with the publication of Göbekli Tepe: Genesis of the Gods. In it he refers briefly to Atlantis commenting that “Plato’s account of Atlantis might well be based on some kind of historical reality” (p.168). This seems to lack the certainty he showed in his best-selling Gateway to Atlantis. Additionally, Collins has produced a 68-minute video entitled Gobekli Tepe and the Watchers of Eden, referencing his earlier work(w). A preview(y) of Genesis of the Gods has been published on a number of websites including Academia.edu and Graham Hancock.com. Collins’ book has been heavily criticised as pseudoscience(an) by at least one commentator.
Hugh Newman, author and self-confessed ‘megalithomaniac’ has now proposed links between Göbekli Tepe and ancient Peru. He has also managed to include Göbekli Tepe in his theory of earth grids(r). Another writer, Trebha Cooper, claims a link between France and Göbekli Tepe(x)!
The unexpected death of Klaus Schmidt (1953-2014) took place on Sunday July 20th 2014 and announced shortly afterwards(s).
In September 2014, archaeologists on the site were describing it as “the oldest known sculptural workshop on the planet.”(v)
The excellent The Stream of Time website from ‘antiquated antiquarian’ has a couple of well illustrated blogs relating to Göbekli Tepe(z) and the region generally.
In April 2015, the Ancient Origins website published a two-part article(ag) by Ozgür Baris Etli, a Turkish scientist,in which he discusses the most recent discoveries on the site. The article(aa)(ab) is well illustrated as the author reviews the carvings there and their possible relevance to the early development of religion. In a 2016 article(ah), on the same site, he has drawn attention to the similarity of the position of carved hands at Göbekli Tepe, Easter Island as well as number of other sites around the world where the hands are shown meeting at the navel. The significance of this, if any, is not known.
What has been identified as possibly the earliest pictograph in the world has now been revealed at the Göbekli Tepe site(ad). Andrew Collins also claims(ae) to have found the earliest depiction of Göbekli Tepe in the museum at Sanliurfa. Not unexpectedly Jason Colavito has a few words to say on the matter(af). Colavito also has a critical view(ai) of the recent Turkish documentary, supported by the government, which claims that Göbekli Tepe was built by Telah, Abraham’s father, and destroyed by Abraham. So who built Nevali Çori?
The March 2017 edition of Mediterranean Archaeology & Archaeometry (Vol.17, No.1, pp 233-250) includes a paper(aj) by M.B. Sweatman & D. Tsikritsis of the University of Edinburgh. In it they claim that the animals carved on the Göbekli Tepe pillars represent asterisms and that they found “compelling evidence that the famous ‘Vulture Stone’ is a date stamp for 10950 BC ± 250 yrs, which corresponds closely to the proposed Younger Dryas event, estimated at 10890 BC.” Understandably, their claims have been met with stony scepticism(ak). Sweatman has expanded his ideas further in Prehistory Decoded .
In an August 2019 article on Graham Hancock’s website(at) Sweatman ventures further into the realms of wild speculation with the suggestion that Göbekli Tepe should be considered the world’s first ‘university’. This obviously had Jason Colavito spluttering into his cereal bowl, prompting him to apply his literary scalpel to the idea(au) .
Constantinos Ragazas has produced a paper(am) in which he argues against the early date ascribed to Göbekli Tepe by Schmidt and others. He ponders on “How a Date can go wrong: Were Göbekli Tepe built 600 BC by Babylonians/Assyrians, no one would flinch a thought. It is the Date that makes Göbekli Tepe an enigma. The great dilemma for archaeologists is reconciling the date with the people that built Göbekli Tepe. Either the date is wrong or our theories of prehistoric people are wrong. And prehistoric people were more capable 12,000 years ago than all our other evidence tell us. Archeologists trust their date over their understanding of prehistoric people. I argue the date is wrong. And prehistoric people were as we have always thought.” While this is controversial enough, Ragazas goes further and claims that Göbekli Tepe is in fact the site of the ‘Hanging Gardens of Babylon’!
However, Ragazas’ reservations regarding the early dating of Göbekli Tepe were given further support in an extensive 2016 paper(ap) by Dimitrios Dendrinos of the University of Kansas.
In March 2019, a paper by Roger M. Pearlman put forward another radical idea, namely, that Göbekli Tepe had been founded by Noah (Noach) and his sons(as).
*There was further excitement at Göbekli Tepe in September 2019 when Andrew Collins was removed from the site and his book, From the Ashes of Angels, banned in Turkey and Collins himself may be subject to a ban. It seems that he may have expressed pro-Kurdish sentiments, which is a big no-no with the Turkish authorities. It is also speculated that some of Collins’ historical views run counter to some extreme Islamic interpretation of the past!*