I looked up, Behold! A mountain of skulls. Each skull was small, just one inch cube (about 2 cm).
The pile increased by eight hundred thousand per year, for one generation (twenty years).
The pile was a pyramid, square at the base - the length, width and height were equal.
800,000 x 20 x 2^3 = 1/3 b^3 = 726.85 cm
The pyramid was almost sixteen cubits along each side (almost twenty-four feet), and the same high.