Semicircular Europe and The Heinsohn Horizon

Semicircular Europe

Once upon a time cartographers carefully crafted a Semicircular Europe.

This Semicircular Europe persisted even when “Asia became wider”.


Eratosthenes (276–194 BCE) drew an improved world map, incorporating information from the campaigns of Alexander the Great and his successors.

Asia became wider, reflecting the new understanding of the actual size of the continent.

The Semicircular Europe persisted when the circumference of the Earth was calculated.


Posidonius (or Poseidonius) of Apameia (c. 135–51 BCE), was a Greek Stoic philosopher who traveled throughout the Roman world and beyond and was a celebrated polymath throughout the Greco-Roman world, like Aristotle and Eratosthenes.

His work “about the ocean and the adjacent areas” was a general geographical discussion, showing how all the forces had an effect on each other and applied also to human life.

He measured the Earth’s circumference by reference to the position of the star Canopus.

His measure of 240,000 stadia translates to 24,000 miles, close to the actual circumference of 24,901 miles.

The Semicircular Europe had a northern inlet called the Caspian Sea for frolicking seals.

Pomponius is unique among ancient geographers in that, after dividing the earth into five zones, of which two only were habitable, he asserts the existence of antichthones, people inhabiting the southern temperate zone inaccessible to the folk of the northern temperate regions due to the unbearable heat of the intervening torrid belt.

On the divisions and boundaries of Europe, Asia and Africa, he repeats Eratosthenes; like all classical geographers from Alexander the Great (except Ptolemy) he regards the Caspian Sea as an inlet of the Northern Ocean, corresponding to the Persian (Persian Gulf) and Arabian (Red Sea) gulfs on the south.

Pomponius Mela

Explaining away the Caspian seal is a real problem and Wikipedia resorts to vague claims that they became “isolated in the landlocked Caspian Sea when continental ice sheets melted” and then throw in some even vaguer “tectonic uplift and a fall in sea level” for good measure.

Evidence suggests the seals are descended from Arctic ringed seals that reached the area from the north during an earlier part of the Quaternary period and became isolated in the landlocked Caspian Sea when continental ice sheets melted.

It became landlocked about 5.5 million years ago due to tectonic uplift and a fall in sea level.

The Roman Empire was so impressed with the cartographer’s Semicircular Europe that they only bothered to conquer Semicircular Europe.

In reality, the destruction of the aqueducts happened swiftly, and with a power no humans had at their disposal.

This happened, in 234 CE, only eight years after the last system had been completed under Alexander Severus in 226 CE.

At the same time, Rome’s population was reduced from nearly one million to no more than 50,000.

The cataclysm had struck with such force that more than half a millennium passed before Europeans could begin to slowly regain the technological competence of imperial Rome.

Toppling of Rome’s Obelisks and Aqueducts – Ewald Ernst – August 2014

Click to access ewald-ernst-on-trevor-obelisks-aqueaducts-01-08-2014.pdf

The assassination of Alexander Severus in 235 led to the Crisis of the Third Century in which 26 men were declared Emperor by the Roman Senate over a fifty-year period.

Roman Empire

The reluctance of the Roman Empire to ravish northern Europe is curious because the vast expanse of the Great European Plain lay before them according to modern map makers.

The European Plain or Great European Plain is a plain in Europe and is a major feature of one of four major topographical units of Europe – the Central and Interior Lowlands.

It is the largest mountain-free landform in Europe, although a number of highlands are identified within.

The plain stretches from the Pyrenees mountains and the French coast of the Bay of Biscay in the west to the Russian Ural Mountains in the east.

Its shores are washed to the west and northwest by waters of the Atlantic basin, to the northeast – the Arctic basin, and to the southeast – the Mediterranean basin.

European plain

However, the reluctance of the Roman Empire to ravish the rest of the Great European Plain is understandable if it was [predominantly] covered by sea water before the Heinsohn Horizon in the 230s AD.

Most of the Great European Plain lies below 152 meters (500 feet) in elevation.

It is home to many navigable rivers, including the Rhine, Weser, Elbe, Oder, and Vistula.

The climate supports a wide variety of seasonal crops.

These physical features allowed for early communication, travel, and agricultural development.

The North European Plain remains the most densely populated region of Europe.

National Geographic – Europe: Physical Geography

European plain - overlay

This would explain why Ptolemy’s map [displaying an isolated Caspian Sea] only emerged “a little before 1300” i.e. roughly 350 years after the Heinsohn Horizon.

Working backwards through the mainstream historical narrative we arrive at the Heinsohn Horizon in the 930s where the mainstream narrative falls into The Academic Abyss and degenerates into fiction, fantasy and fabrication for a period of 700 [phantom] years.

Therefore, some 700 years of the 1st millennium (230 to 930s) have neither strata nor tree samples for C14 or dendro-chronological dating.

Archaeological Strata Versus Baillie’s Tree-Rings: Proposal for an Experiment
Gunnar Heinsohn – 8 September 2014

Click to access gunnar-strata-vsbaillie08-09-2014.pdf

The problem for many mainstream and tributary historians is that their professional lives are dedicated to filling The Academic Abyss with fiction, fantasy and fabrication.

Surviving texts of Ptolemy’s Geography, first composed c. 150, note that he continued the use of Marinus’s equirectangular projection for its regional maps while finding it inappropriate for maps of the entire known world. Instead, in Book VII of his work, he outlines three separate projections of increasing difficulty and fidelity.

The oldest surviving manuscripts of the work date to Maximus Planudes’s restoration of the text a little before 1300 at Chora Monastery in Constantinople (Istanbul); surviving manuscripts from this era seem to preserve separate recensions of the text which diverged as early as the 2nd or 4th century.


Maximus Planudes (c. 1260 – c. 1305) was a Byzantine Greek monk, scholar, anthologist, translator, grammarian and theologian at Constantinople.

Planudes possessed a knowledge of Latin remarkable at a time when Rome and Italy were regarded with some hostility by the Greeks of the Byzantine Empire.

This would also explain why my schooling simply sidestepped the Great European Plain.

Gallery | This entry was posted in Catastrophism, Earth, Geology, Heinsohn Horizon, History, Inflating Earth, Water. Bookmark the permalink.

11 Responses to Semicircular Europe and The Heinsohn Horizon

  1. Tim,

    I’m toying with the idea that the Roman terminating event might have been the Pleistocene event based on the burial of some small aqueducts under ‘Holocene’ sediments in the Garzweiller open-cut mines NW of Cologne. If you place Roman works on top of Pleistocene strata, then exactly what differentiates Holocene from Pleistocene sedimentologically?

    I’ve also thought that enormous walled cities had walls to stop megafauna from interfering with humans at night time.

    Just a few impossible ideas before breakfast 🙂

  2. malagabay says:

    I’ve had a few of those “impossible ideas” as well – and not just before breakfast 🙂

  3. andrewfitts says:

    Breaking news – Ewald Ernst to present at the May 16-19, 2016 Toronto conference. He arrives at a similar revised chronology as Heinsohn, but doesn’t have a primary focus on stratigraphy.

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  5. malagabay says:

    Curiously, even Indo-European languages display a Semicircular Europe preference.

    Diachronic map showing the approximate extent of the centum (blue) and satem (red) areals. The origin of satemization according to von Bradke’s hypothesis is shown in darker red (marked as the range of the Sintashta/Abashevo/Srubna archaeological cultures), although this hypothesis is not accepted by the majority of linguists.

  6. Bobod says:

    What never fails to surprise me is this: If someone were to say that the Caspian Sea was connected to the Baltic Sea, and much of Northern Europe was under water until a massive event shifted the coastlines, and that happened a little over a MILLION years ago, most people would have no problem with that, and agree with it.

    But if someone says the exact same thing happened a little over a THOUSAND years ago, those same people would find ti ridiculous, and resort to insults. The mindset seems to be that they are happy for massive events like this to have happened in the remote past, but not in the age of literate civilisation.

    Alexander the Great’s empire(in Europe) also curiously ends where the modern edge of the European Plain is today, while the Achaemenid Persian Empire also went to the exact edge of the old Roman maps in Asia.

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  11. H says:

    Wikipedia on the ancient Celts not only explains how “uncertain”, “controversial” “disputed” their history is but also has this map (on imgur to include the legend):

    Somehow the Celts also had that same aversion to that great plain.

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