It’s a large pile of rocks. Of course there are voids.
Yes, after generations of telling us the stones were set with such precision that a knife blade can’t fit between any two of them, now the fake Egyptologists (bureaucrats and ex-bureaucrats) are telling us there are voids.
There are ramps, tunnels, and chambers inside the Great Pyramid that can at present only be studied with non-invasive techniques, “but when it comes to the secrets of the Pyramids at Giza, these are known only to Egyptologists, and not to engineers.” (Zahi Hawass)
http://blog.world-mysteries.com/wp-content/uploads/2013/11/spiral-ramp-thermal-image_sm.jpg
