This unfinished subterranean chamber, an unfinished chamber within
Khufu's Pyramid, lies 90 feet (30 meters) below the surface of the plateau, and
is closed to the public. Standing alone inside this oxygen-deficient space is
quite an experience; 2.3 million blocks of stone weighing some 6.5 million
tons loom overhead. Workers down here chipped away at the limestone bedrock to
build what is thought to be the original burial chamber for King Khufu.
Egyptologists believe the chamber is 'unfinished' because Khufu suddenly
decided he wanted his burial chamber to be higher in the pyramid, and ordered
the workers to stop. Khafre's Pyramid follows a similar pattern, with an
unfinished subterranean burial chamber.