The prehistoric giants displayed archaic or "primitive" characteristics is well documented, but hard for most to wrap their head around. The current archaeological steadfast theory of "replacement" is slowly being replaced by the "assimilation." model that shows that the Cro Magnon and Neanderthal did mate and create a giant race.
These physical characteristics do still occur with modern populations.
Nikolai Valuev, a former heavyweight boxer is now a member of Russian parliament" 7 feet and 325 pounds, This is the face of the ancient race of giants that was so prevalent in the Bible and the Ohio Valley.
The sloping forehead and protruding brow ridge was the major reoccurring skull characteristic of the giant remains found within the mounds in Great Britain and the Ohio Valley.