Mysterious markings discovered at Great Pyramid of Giza

London, England (CNN) -- A robot explorer has revealed ancient markings inside a secret chamber at Egypt's Great Pyramid of Giza.

The markings, which have lain unseen for 4,500 years, were filmed using a bendy camera small enough to fit through a hole in a stone door at the end of a narrow tunnel.

It is hoped they could shed light on why the tiny chamber and the tunnel -- one of several mysterious passages leading from the larger King's and Queen's chambers -- were originally built.

The markings take the form of hieroglyphic symbols in red paint as well as lines in the stone that may have been made by masons when the chamber was being built.

According to Peter Der Manuelian, Philip J. King Professor of Egyptology at Harvard University, similar lines have been found elsewhere in Giza. "Sometimes they identify the work gang (who built the room), sometimes they give a date and sometimes they give guidelines to mark cuttings or directional symbols about the beginning or end of a block," he said.

"The big question is the purpose of these tunnels," he added. "There are architectural explanations, symbolic explanations, religious explanations -- even ones relating to the alignment of the stars -- but the final word on them is yet to be written. The challenge is that no human can fit inside these channels so the only way to do this exploration is with robots."

Pictures of the markings have been published in the Annales du Service Des Antiquities de l'Egypte, the official publication of Egypt's Supreme Council of Antiquities, following an international mission led by the Minister for Antiquities.

The robot explorer that took the images is named Djedi, after the magician whom Pharaoh Khufu consulted when planning the layout of the Great Pyramid. It was designed and built by engineers at the University of Leeds, in collaboration with Scoutek UK and Dassault Systemes, France.
Although robots have previously sent back pictures from within the pyramid's tunnels, Djedi's creators say it is the first to be able to explore the walls and floors in detail, rather than just take pictures looking straight ahead, thanks to a "micro snake" camera.

The camera also scrutinized two copper pins embedded in the door to the chamber at the end of the tunnel. In a statement, Shaun Whitehead, of Scoutek UK, said: "People have been wondering about the purpose of these pins for over 20 years. It had been suggested that they were handles, keys or even parts of an electrical power plant, but our new pictures from behind the pins cast doubt on these theories.

"We now know that these pins end in small, beautifully made loops, indicating that they were more likely ornamental rather than electrical connections or structural features. Also, the back of the door is polished so it must have been important. It doesn't look like it was a rough piece of stone used to stop debris getting into the shaft."

The team's next task is to look at the chamber's far wall to check whether it is a solid block of stone or another door.

"We are keeping an open mind and will carry out whatever investigations are needed to work out what these shafts and doors are for," said Whitehead. "It is like a detective story, we are using the Djedi robot and its tools to piece the evidence together."

Mysterious deaths of 2 hunters UFO

In 1966, two men who are obsessed with UFOs went into a hill in Rio De Janeiro. Three days later, the two men's bodies were found lying lifeless with an unknown cause of death until today.

This mysterious case earned the nickname of The Mystery of the Masks Lead Case and is one of the most mysterious deaths in the history of Brazil. Perhaps due to the fact that the two victims are men who are obsessed with UFOs and so-called attempt to make contact with aliens.

The day was supposed to be a great day for Manoel Pereira da Cruz and Miguel José Viana. They have been planning something secret and quite enthusiastic with what might be found.

So, on August 17, 1966, they left the city where they live, Campos dos Goytacazes. To the family, they said it would buy some electronic materials for the job. Both men are technicians television.

At that time they took a sum of 2300 Brazilian Real.

Manoel and Miguel then took the bus and arrived in Niteroi in at 14:30. They stopped at a shop and buy a coat and a bottle of drinking water. Later waiter at the store said that Miguel looked very nervous and always looking at his watch.

Whatever is being planned for these two, they seemed very rushed.

From the store, the two men immediately went to Morro do Vintem (Hill Vintem), Rio De Janeiro.

They never imagined that the place would be the end of their journey.

Three days later, on August 20, 1966, a 18 year old named Jorge da Costa Alves was flying kites on the hill when he witnessed a strange sight.

In one part of the hill, Jorge saw two bodies lying on the surface of the hill covered with shrubs and tall grass. Both wore similar clothes. Each also wore a kind of protective coat. Surprisingly, the two men lying neatly while wearing masks of tin.

Jorge closer and realized that both the figure was already lifeless. With haste, he got off the hill and contacted the police.

Not long after, the site was filled by journalists and police officers. And this is the beginning of a perplexing mystery

What caused their death?

Police combed the location of the discovery of the bodies immediately and collect all objects that could be a clue. However, any instructions that are found even make it grow mysterious case.

For the record, it becomes a mysterious case not only because of the condition of the corpse filled with puzzles. However, because the coroner who examined the bodies are not able to determine the cause of death.

On the outside of the body, there were no marks of violence or physical injury that might kill them. Diagnosis is also strengthened by the fact that the tall grass near the body is not damaged which indicates that the two victims did not have struggles or fights in that place.

While on the body part in, the officer can not conclude anything because the organs of the body had decayed due to a delayed autopsy process. These conditions make the test toxin can not be done. So we will never know for sure whether there are toxic substances taken by both.

In addition, other things that add to the mystery aspect of this case are the objects found on the corpse.

Both men were found in a state of wearing a tin mask covering their eyes.

According to the victim's family, both of these masks are made by Manoel and Miguel in their workshops and are intended to protect themselves from radiation. But nobody knows what is meant radiation of both.

In addition to these tin mask, there are several other objects found around the corpse.

Among them was a notebook containing a diagram with one line which reads:

"Estar 16:30 no local determinado. 18:30 ingerir cápsulas, efeito após proteger metais aguardar sinal Mascara"

If translated, this sentence reads: The investigator can not describe the intent of the message.

In addition, the note is confusing because it is made with some spelling and grammar is wrong.