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.
Two of the six tallest pyramids on the planet are in this country. The Pyramid in Memphis is sixth tallest, at 321 feet... and the Luxor Hotel and Casino Las Vegas is third, at 348 feet. The Great Pyramid of Giza is first, at 456 feet. Another pyramid in Giza is second. Only they are taller than the Luxor.