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.
Today the pyramid still stand tall but nearly 10 meters shorter then its original height, at 137 M. Despite the allure pertaining to the pyramid's structure and design, the Great Pyramid of Giza can simply be appreciated for the effort with which the ancient Egyptians built this beautiful artwork.