Within the genus Homo, cranial capacity again doubled from H. habilis through Homo ergaster or H. erectus to Homo heidelbergensis by 0.6 million years ago. The cranial capacity of H. heidelbergensis overlaps with the range found in modern humans.
The original height of the Pyramid was 146.5 m (488 ft), but today it is only 137 m (455 ft) high, the 9 m (33 ft) that is missing is due to the theft of the fine quality white Tura limestone covering, or casing stones, for construction in Cairo. It is still the tallest pyramid.
In addition to Khufuâs pyramid, two other large pyramids for pharaohs were erected at the Giza site, one for his son Khafra (it originally stood 471 feet high) and the other for Khafraâs son Menkaure (originally 218 feet high). Khafraâs pyramid complex is home to the famous Great Sphinx statue, which measures 241 feet long and about 66 feet high. Over the ages, all three pyramids have been targeted by grave robbers and much of their exterior white limestone stolen, possibly for use in other building projects.