La chouette d'or

La chouette d'or - Wikipedia, the free encyclopedia: "Many people have attempted to solve the clues. One attempt apparently came very close, as Valentin noticed when checking the owl that nearby ground had been disturbed. Valentin received a great volume of correspondence regarding the puzzle, and has said that Dr. Gay, an immunologist and prolific treasure hunter, has come closest.
The owl has inevitable attracted more desperate attempts, and Valentin was the subject of much nuisance and malicious correspondence. One notable incident involved a treasure hunter bombing a chapel in the mistaken belief that the sculpture was buried underneath it."