According to the Bible, the average human lifespan before the flood was 912 years! For the next few generation after the flood, people were still living 400-500 years. What would a person look like at such a great age?
After over 25 years of paleoanthropological studies, Dr. Jack Cuozzo believes that fossil individuals displaying Neanderthal-like morphology are really post-flood people still living to these great ages. The chart taken from his book tracks boney changes that take place in the human skull over time. Pure extrapolation 400-500 years creates a clear Neanderthal-like shape of the face and head.
Dr. Cuozzo's research is documented in his amazing book, "Buried Alive: The Startling Truth About Neanderthal Man".