Petko & Dimitar Dimitrov are a Bulgarian father and son team, who have written about the pre-flood Varna civilisation which they claim existed on the then exposed Black Sea plain, however, they do not call it Atlantis by name. Their book is available, in English, online(a) as a pdf file.
Their book, The Black Sea, the Flood and the Ancient Myths, which supported much of Ryan & Pitman’s work. Unlike them, who based much of their conclusions on a study of mollusks, the Dimitrovs focused on sedimentation evidence. They also suggest that the Holocene influx into the Black Sea also triggered the Vedic Aryan migration to India(b).
The Caspian Sea is not usually associated with the story of Atlantis, but as early as the 19th century Moreau de Jonnès proposed the Sea of Azov as the location of Atlantis and that the Black, Caspian and Aral Seas were just remnants of a large ocean.
While this may sound like a wild idea, one modern researcher, Ronnie Gallagher, has written an important paper(b) supporting the concept (see fig.8).*This enlarged inland sea is also thought to have extended as far north as the Arctic.*
*Fessenden cites Strabo (Book 11:7;43), who recounts a tradition that the Caspian had been connected with the Black Sea by way of the Sea of Azov.*
Modern proponents of Atlantis in the Sea of Azov have suggested(a) that at the end of the last Ice Age floods of meltwater poured into the Caspian Sea, which in turn escaped through the Manych-Kerch Gateway into what is now the Sea of Azov, but at that time contained the Plain of Atlantis!
Immediately to the south of the Caspian are the Caucasus Mountains which have also had links with Atlantis put forward.
Adrian Bucurescu is a Romanian ethnographer and a prolific article writer and also the author of Dacia Secreta and Dacia Magica. He identifies the Black Sea and what is now mainland Romania as the home of Atlantis.*[He locates the Pillars of Hercules at the Danube gorge at the mouth of S-W Romanian river Cerna (also known as Acheron, Charon, Geryon) and that the capital of Atlantis was the city of Tulcea (Tul=atlas+Cea=land) at the Danube Delta.
Furthermore, Bucurescu claims that Plato originally said 5,000 not 9,000 years had elapsed between the Atlantean war and Solon’s visit to Egypt. He bases this idea on his claim that the works of the Greek philosophers were preserved in Arabic translations after the fall of Constantinople and that their numbers ‘5’ and ‘9’ were sufficiently similar to have led to a transcription error!(b)]*
However, a further contribution on Graham Hancock’s website has him listing the ten kingdoms (of Atlantis) extending over a much larger region, including Poland, Egypt and Sumeria(a)!
William Ryan & Walter Pitman published evidence, in 1997, that extensive flooding of the Black Sea occurred through the Bosphorus around 5600 BC. Controversy still surrounds various aspects of their
theory, some even claiming that the Black Sea broke into the Aegean.
This was later published in book form as Noah’s Flood and was understandably seized upon by many as proof of the veracity of the Bible. In fact a year before Ryan & Pitman launched their book, René & Denise Capart published l homme et les déluges, in which they linked the Black Sea with the the Deluge of Noah. A Bulgarian father and son team, Petko & Dimitar Dimitrov, refer to the pre-flood Varna civilisation existing on the Black Sea plain, but not calling it Atlantis by name. Their book is available online(a).
Inevitably, I suppose, Atlantis has been more firmly linked with this event by a number of commentators, particularly, Christian & Siegfried Schoppe(b). However, Hristo Smolenov also claimed that swathes of the Varna civilisation were inundated by the rising waters of the Black Sea but had no hesitation identifying it with Atlantis.
André Capart (1914-1991) was a former head of the Belgian Royal Institute of Natural Sciences and has also directed oceanographic research for NATO. Professor Capart and his anthropologist wife Denise (1918-2011) believed that the Atlanteans originally came from Libya and invaded the Aegean setting up their colonial capital on Thera(a). Capart and his wife were planning an expedition to Santorini in the late 1980’s, but it appears that no report of their findings has been published.
In 1986 the Caparts published L’ homme et les déluges which deals with the recurring cycles of ice ages, changing sea levels and the associated floods. They linked Noah’s Flood with the Black Sea(b) over a decade before Ryan & Pitman published their better known book, Noah’s Flood.?
Jon Nelo Juganaru (1948- ) is Romanian by birth, but emigrated to the United Staes, where he laboured as a glass artist and now writes under the pen-name of ‘Raven Alb J.’
His 2012 book, Why and How the Ice Age Ended, is a large tome that should have been edited to fraction of its size. As the title suggests it deals with the ending of the of the last Ice Age, which he claims was caused by an asteroid impact that also led to a Pole Shift. Another consequence was the destuction of Atlantis, which Juganaru identifies as Europe with its capital city situated in the Black Sea.
Among a number of his odd claims is that Göbekli Tepe is a miniature of Atlantis!
Throughout the book the author constantly introduces Romanian words for explanation, to the point where it quickly became irritating. Furthermore, he is also guilty of what for me is the publishing crime de la crime relating to non-fiction books, there is no index.
Bulgaria has not been totally excluded from the search for Atlantis. In 2012 it was announced that the oldest European town had been discovered in Bulgaria(a), near the town of Provadia and dated to about 4500 BC. Recently there were metal beads discovered in Bulgaria tentatively dated to 6000 BC. Along with recent discoveries of hoards of Thracian gold it is obvious that Bulgaria was no backwater, although identifying it with Atlantis is not a runner.*[Nevertheless, some have attempted(e) to link Atlantis with the ancient region of Thrace, which today would occupy a section of Bulgaria along with parts of Greece and Turkey.]*
In the mid-20th century the noted Bulgarian astronomer Nikola Bonev placed Atlantis in the Atlantic. However, the flooding of the Black Sea as revealed by Ryan & Pitman triggered the imagination of a number of people. The Schoppe father and son team who favour a Black Sea location for Atlantis have broken with the generally held view that Gadeiros, the twin brother of Atlas, gave his name to the city of Gades, now Cadiz in southwest Spain and proposed the more radical view that he gave his name to the Getae who occupied parts of today’s Bulgaria and Romania(b).
In 2012, Hristo Smolenov went further and suggested a closer connection between Bulgaria and Atlantis on his website(c), a video(c) and a book, Zagora – Varna: The Hidden Superculture.
Hristo Smolenov (1954- ) was born in Bulgaria’s second largest city, Plovdiv. He is a recognised expert in counterterrorism and mathematics and is also the latest advocate of a Black Sea Atlantis, which he identifies with what he calls the Aurolithic Varna Civilisation that existed 3,000 years before the pyramids. Varna today is situated in the Bulgarian province of Stara Zagora on the Black Sea coast. He has publicised his views through a website(a), video(b) and a book, Zagora – Varna: The Hidden Superculture.
Thomas J. Krupa (1930- ) is the author of Biblical Flood, Noah’s Ark and the Star of David  , in which he makes a number of startling claims. The book begins with an attack on the theory of plate tectonics. He then moves on to the opening of Drake Passage(a), conventionally considered to have taken place around 40 million years, but dated by Krupa to just 29,000 years ago, eventually leading to the ending of the Ice Age.
He also proposes the existence of an isthmus or landbridge between Sicily and North Africa and that the limestone structure was weakened by the rising Atlantic and rain erosion and finally fractured by an earthquake, which led to the flooding of the Black Sea and further afield. He then contends that a backwash from this flooding created the Strait of Messina.
He believes that this Sicilian isthmus “is a stronger contender for the location of Atlantis than every other place that I am aware of.”
Krupa then moves on to discuss Noah’s Ark, which he claims had a keel shaped like the Star of David and furthermore that the ‘Star’ was incorporated in the design of Stonehenge! Coincidentally, Robert John Langdon has also linked the hexagram or Star of David with the layout of Stonehenge(b).
Advancing to even more contentious matters he maintains that the Kaaba in Mecca is intended as a replica of the Ark and to crown it all that Alexander the Great is buried within the Kaaba!!!
Anatoliy Ivanovich Zolotukhin is a Ukranian researcher from the city of Nikolaev (also known as Mykolaiv) an important shipbuilding centre, northwest of Crimea. He is the author of 50 research works on acoustics and turbulence as well as 26 inventions. He is now retired and apart from his ecological interests he has devoted a website with the intriguing title of Homer and Atlantis(a).
His main objective is to demonstrate that Homer’s story of Odysseus’ wanderings took place within the Black Sea, but that is not the only controversial claim made by him. With regard to Atlantis he locates it in the vicinity of Evpatoria in western Crimea. His 60-page book, Homer. The Immanent Biography is available on his website(b).