record was made by King Khufu, whom the Greeks called Cheops and who lived thirty centuries before our era. His mound, which the Greeks called a pyramid (because the Egyptian word for high was pir-em-us) was over five hundred feet high.
It covered more than thirteen acres of desert which is three times as much space as that occupied by the church of St. Peter, the largest edifice of the Christian world.
During twenty years, over a hundred thousand men were busy carrying the necessary stones from the other side of the river — ferrying them across the Nile (how they ever managed to do this, we do not understand), dragging them in many instances a long distance across the desert and finally hoisting them into their correct position. But so well did the King's architects and engineers perform their task that the narrow passage-way which leads to the royal tomb in the heart of the stone monster has never yet been pushed out of shape by the weight of those thousands of tons of stone which press upon it from all sides.