Page "Great Pyramid of Giza" Paragraph 17

The shafts in the Queen's Chamber were explored in 1992 by the German engineer Rudolf Gantenbrink using a crawler robot of his own design which he called " Upuaut 2 ".

After a climb of, he discovered that one of the shafts was blocked by limestone " doors " with two eroded copper " handles ".

Some years later the National Geographic Society created a similar robot which drilled a small hole in the southern door, only to find another larger door behind it.

The northern passage, which was difficult to navigate because of twists and turns, was also found to be blocked by a door.

This research was continued in 2011 by the Djedi Project team.