These 4 mysterious symbols are in front of the real entrance of the pyramid which is hidden from the public. The archaeologists never succeeded in decoding these symbols and that they were irrelevant, engraved by an anonymous worker, such as a graffiti ... Independent researcher Jean Seimple, who revealed that the secret of the Greenwich meridian, which commemorates and indicates the current location of Atlantis has succeeded in decoding it and asserts with certainty that These 4 symbols, are the only authentic and unique signs, up to this day, left by the true builders of the pyramid! These 4 symbols convey the most important message of the builders coded in the pyramid, known by some initiates and this in an extremely simple way and summarizes by themselves this article. As always, "simplicity is the ultimate sophistication" is a signature of the builders of the pyramid. Their intelligence being superior to ours, they had realized that these 4 signs, engraved on a granite plaque and