This guy knows! There have been several missions exploring the shafts and chambers of the Great Pyramid of Giza in Egypt, including the use of robots.

In 1993, a robot named Upuaut-2, designed by the French robotics engineer Rudolf Gantenbrink, was sent up the southern shaft of the Queen's Chamber in the Great Pyramid. Upuaut-2 discovered a limestone door with copper fittings, which is now known as the "Gantenbrink Door". However, the robot was unable to proceed further due to the narrow and angled nature of the shaft.

In 2002, a National Geographic expedition used a robot called Pyramid Rover to explore the same southern shaft of the Queen's Chamber. The robot was able to penetrate a small distance beyond the Gantenbrink Door, but encountered a blockage of limestone "doors" that prevented further exploration.

In 2011, a team of scientists from the University of Leeds and Cairo University used a robot called Djedi to explore the southern shaft of the Queen's Chamber. Djedi was equipped with a miniature camera and various tools, including a drill, which was used to explore behind a small door in the shaft. The team was able to take pictures and video footage of the previously unexplored space behind the door.

To my knowledge, there hasn't been a robot mission that explored the shafts of the King's Chamber.

I've been inside that pyramid twice in the past year. To me the biggest proof that it's a machine is the "choke" area between the king's chamber and the Grand gallery.

Want an interesting read? Apprehend Christopher Dunn's book, "The Giza Power Plant"

This guy knows!