Caro Rock


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It's a carved rock in Bretagne (Britain) in France.

Mysterious inscriptions on a rock: €2,000 for those who can decipher them!

In In Focus, Treasure Hunters & Adventure May 3, 2019 0

The rock of Caro, in Plougastel-Daoulas, Finistère, has inscriptions that have never been deciphered until now.

To solve the mystery, the Town Hall is offering €2,000 to the one who will decipher the "Champollion Mystery in Plougastel-Daoulas" (name given to this enigma, in homage to Champollion, the Egyptologist who translated the Rosetta Stone).

Mysterious inscriptions on a rock: €2,000 for those who can decipher them!

The rock shows a text of about twenty lines ("GROCAR DREAR DIOZEEVBIO" are the first words) and dates :

1786 and 1789 (years that correspond to the construction of the nearby Fort du Corbeau).
1920 (the latter is said to have been engraved by a Russian soldier stationed in the same fort).

Equally enigmatic drawings accompany the text: a heart planted with a cross, a sailboat.

Several questions arise:

Who carved the stone?
In which language or coding?
To say what?

The mystery remains intact....

That is why the municipality of Plougastel-Daoulas has launched a national appeal to linguists, historians, students, academics and other enthusiasts (do you recognize yourself?) to solve the mystery, in the form of a competition that runs from May to the end of November 2019, with a prize of €2,000 (the competition is open to all adults).
The hypotheses will be analysed by a jury, composed of academics and a representative of the Departmental Archaeology Service.

Translated with


FOTCM Member
10 May 2019
French village offers €2,000 reward for anyone who can decipher mystery stone message

Local councillor Michel Paugam poses with the rock. Photo: AFP

A French village is offering a €2,000 reward to anyone who can decode a mysterious, centuries-old inscription on a rock visible only at low tide.
Lapped by the waves of the Atlantic and visible at only low tide, the mysterious rock inscription is believed to be centuries old and so far undeciphered, lurking outside a French village in Brittany.
The town hall in Plougastel-Daoulas in the Finistere region of Brittany in northwest France is now offering a €2,000 reward for anyone who can decrypt the sequence of letters and symbol.

Detail of the mysterious carving on the rock. Photo AFP

Could the small boulder have been used for a love letter whose secret has remained untouched for centuries, or a proud note left by an
eighteenth-century fort-builder? Or something even more mysterious?
Locally, the rock is sometimes compared to the Rosetta Stone, the great ancient Egyptian stele now in the British Museum whose inscription was partly deciphered by the French Egyptologist Jean-Francois Champollion.
The authorities in Plougastel-Daoulas hope that their competition will shed light on the enigmatic piece of history.
"This inscription is a mystery and it is for this that we are launching the appeal," said Veronique Martin, who is spearheading the search for a
The rock, which is around the size of a person, is accessed via a path from the hamlet of Illien ar Gwenn just to the north of Corbeau point.
The inscription fills the entirety of one of its sides and is mainly in capital letters but there are also pictures including a sailing boat. There are two dates, 1786 and 1787.
"These dates correspond more or less to the years that various artillery batteries that protected Brest and notably Corbeau Fort which is right next to it," she said.
On a first glance the inscription defies interpretation.
"There are people who tell us that it's Basque and others who say it's old Breton," said the mayor of Plougastel-Daoulas Dominique Cap.
"But we still have not managed to decipher the text,"
the mayor told AFP, adding the rock was first spotted around three-four years ago.
The appeal to crack the code has been made to linguists, historians, academics, students or simply people who enjoy code-breaking as a hobby.
A jury will then meet to choose the most plausible suggestion and award the prize.
"There are a lot of words, they're letters from our alphabet, but we can't read them, we can't make them out," said the municipal councillor in charge of local heritage Michel Paugam.
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