In 1928, a mysterious event related to ancient artefacts took place in Egypt. A group of French archaeologists led by Jean Durand discovered a previously unknown crypt near the Great Pyramids of Giza. The crypt was located at a depth of 30 meters and had an unusual construction: its walls were covered with symbols that did not correspond to the known Egyptian hieroglyphs.

At the entrance to the room, archaeologists discovered a monumental granite door inlaid with golden symbols. According to the linguists involved in the research, these symbols could represent a completely new writing system, preceding the development of classical Egyptian hieroglyphs by several millennia.

Inside the crypt was a unique artefact - a crystalline sarcophagus measuring about two metres in length. Its surface was completely transparent, but its contents remained invisible even in bright light. When trying to photograph the sarcophagus, the film was completely white, regardless of the type of camera used.

The most amazing part began when the team decided to conduct an experiment to interact with the artefact. When one of the scientists, Edmond Lebrun, put his hand on the surface of the sarcophagus, he suddenly lost consciousness. After awakening several hours later, he recounted visions that could not be explained scientifically: giant cities underwater, strange flying machines and humanoid-looking creatures with unusual body proportions.

Other members of the expedition also experienced various effects when in contact with the sarcophagus: dizziness, changes in the perception of time and space, and unexplained emotional outbursts. However, no one else lost consciousness as Lebrun did.

Interestingly, after this case, strange phenomena began in the excavation area. Local residents reported unusual glows above the pyramids at night, and the researchers' compasses periodically showed anomalous deviations. Surveillance cameras installed to document the research process recorded strange light formations that moved against all laws of physics.

The French government, upon learning of the discovery, sent a special commission to investigate the situation. The commission worked in complete secrecy, and the official reports have not yet been published. It is only known that all members of the expedition soon left Egypt for unknown reasons, and the crypt itself was sealed with concrete.

Subsequently, some researchers linked this discovery to legends of lost Atlantis or other ancient civilizations with highly developed technologies. Conspiracy theorists claim that such artefacts may be part of a network of ancient portals or communication devices with extraterrestrial civilizations.

Official science does not recognize the authenticity of these events, considering them either fiction or the result of insufficiently accurate documentation. However, numerous independent sources indicate that materials on the case are held in the closed archives of various governmental organizations.

 The story remains one of the most mysterious in the history of archaeology, causing much debate and speculation. Some researchers are still trying to find new evidence or access closed documents related to the case. Perhaps the truth about the find will never be fully revealed, but it is mysteries like this that continue to attract the attention of scholars and mystery lovers of the ancient world.

Today, the site of the find is hidden beneath the modern developments of Cairo, and only a few people know the story of the mysterious crystalline sarcophagus that could turn our understanding of ancient human history upside down. This case serves as a reminder of how many more mysteries our planet holds and how much we can learn about the past if we scrutinize every detail.