One of the Seven Wonders of the Ancient World, the Pyramid of Cheops is also the largest pyramid of Egypt. This pyramid has been the cause of great controversy and curiosity.
The investigation of this pyramid began with robbers looking for treasure, sophisticated scientific means were used only around the 1700’s. After all these decades, much is yet to be learned about this massive monument to death.
One of the chambers of the pyramid, where Cheops empty sarcophagus was found - The Kings Chamber - has 4 shafts built in. This was very intriguing since none of the other pyramids had any shafts like this nor can any specific purpose be assigned to these shafts as yet.
Many years ago a robot was sent in the two lower shafts, after about 65 meters it was blocked by a stonewall in both the shafts. Also this stonewall was of very good limestone and intricately carved, with 2 copper rings jutting out from it. In 2003 a second robot was sent in, now even a small hole was drilled through the door and a camera sent in through this hole and another door was found to be situated 21 cms later.
Now there are plans for another robot from National University of Singapore, which will take up this mystery. This robot is going to be equipped to penetrate the second door and hopefully throw light on the purpose of these shafts.
Scientists also hope that this may lead to the actual finding of Cheops mummy.

Ref: The UPUAUT Project

Pyramid History
Guardian.net

Source: Physorg.com