Gavrinis And Core No. 7

Gavrinis and Core No. 7 have more in common than 4,000 BC archeological mysteries – after five years and over 1,300 posts, Core No. 7 and Gavrinis rank first and second in search terms generating Notes traffic.

Core No. 7 – In 1881 British archeologist Flinders Petrie picked up a smooth rock near the pyramids at Giza, a seemingly impossible plug of granite construction debris. Science doesn’t know how, but think they know where No. 7 came from. A plug of red granite drilled to form a door pivot – not chiseled, drilled with precision accuracy. Drills leave markings behind – a road map of rate and pressure. This is when 4000 year old granite cores get freaky – the markings on Core No. 7 are so perfectly spaced, engineers don’t believe a modern diamond tip mechanized drill could duplicate them.

Click to access 1503.0182v1.pdf

Gavrinis – Worlds away from mysteries of Egypt, a tiny rock off the coast of Brittany in France harbours the wonder of Gavrinis.In 1835 French archeologists poked about a sunken burial chamber entrance on uninhabited Gavrinis, full excavation took place in the 1930s. Waiting inside, over 50 stone slabs, more than half adorned with intricate carvings resembling fingerprints. Mathematicians believe it a code of sorts. Computer analysis dropped a bombshell – patterns represent the number of days in a year, references to solstice and equinoxes, an exact longitude and latitude of the island, and the “mathematical constant Pi”.

ACHAMAN GUAÑOC: Cairn de Gavrinis

Happy Pi Day

The circumference of a circle, regardless of size is 3.14 times longer than the diameter (distance across). Circumference divided by diameter is a mathematical constant known as Pi. By definition Pi is a mathematical constant because it isn’t changed by the size of numbers it’s used to equate. Pi is irrational, meaning it has an infinite number of digits which never repeat. In 2018 physicist Peter Trueb calculated Pi to 22.4 trillion digits – 22,459,157,718,361 to be precise. Limitless as Pi may be, NASA’s Jet Propulsion Laboratory requires a mere 15 Pi digits to calculate interplanetary travel, mathematician James Grime argues 39 digits is enough to calculate circumference of the known universe. In 1988 physicist Larry Shaw organized the first Pi Day at San Francisco’s Exploratorium science museum on 3.14. In 2009 U.S. Congress officially recognized the fourteenth day of the third month as Pi Day.

Antiquity was no stranger to Pi, ancient Egypt and Babylon calculated approximations of Pi between 1900-1600 BC. In 250 BC Greek mathematician Archimedes is credited with the first algorithm calculating Pi as 3.14. Chinese mathematician Zu Chongzhi (429-501) calculated Pi to 6 decimal places.

March 14 ignites ponders of my Pi soft spot. Gavrinis, a Neolithic site inhabited between 5000-3500 BC on a tiny island off the Brittany coast of France. In the 1930’s French archeologists discovered a burial chamber on Gavrinis containing stone slabs with intricate carvings resembling fingerprints. Mathematicians saw it as indecipherable code, modern computer analysis blew our minds – Gavrinis code indicates the exact number of days in a year, reference to solstice and equinoxes, precise longitude/ latitude of the island, and the “mathematical constant Pi.

Happy Pi Day.


Most people have knowledge of Stonehenge; without question the daddy of Neolithic sites. A sprinkling know of Carnac; over 3000 carefully aligned stones – some of monolithic proportions, erected between 3300 – 4500 BC near the village of Carnac in France. Fewer still have uttered the word  Gavrinis.

Gavrinis, a tiny island off the coast of Brittany in France clung to the mainland between 3,500 and 5,000 BC., a time defined by burial tomb construction. Not more than a bumpy  outcropping of rock (750 by 400 meters) uninhabited Gavrinis slept undiscovered until 1835 when French archaeologists started poking about a sunken burial tunnel entrance. Serious excavation began in the 1930s.

Gavrinis defies explanation. Over 50 stone slabs form the entrance tunnel and inner chamber – curiously carved slabs begging for stand at attention while humming the theme from 2001 Space Odyssey reverence. Gut reaction to a mind blowing epic – Gavrinis is no ordinary Neolithic site..

Roughly half the slabs boast intricate carvings resembling fingerprints. Mathematicians  believe it’s a code of sorts. Computer analysis dropped a bombshell – patterns represent the number of days in a year, references to solstice and equinoxes, an exact longitude and latitude of the island, and the “mathematical constant Pi”.

Much as this makes me grin from ear to ear, I have to admit not everyone is on board.  Many mysteries of the ancient world find themselves living on book shelves in “wing nut” land. Irrefutable archaeological evidence hasn’t taken Gobekli Tepe or Puma Punku off the crazy shelf and into mainstream consciousness. If 16th century Turkish admiral Piri Reis could produce a map of Antarctica, precisely as it would appear without ice, yet wallow in conspiracy land – it’s doubtful Neolithic people at Gavrinis coding “Pi” into fingerprint carvings will make a ripple.

Call me a pondering fool, I don’t care.Not for a second do I entertain the notion “alien” or otherworldly intervention had anything to do with ancient head scratchers. I’m going to fall asleep with a silly little grin; content in the knowledge that ancient civilizations kicked ass.