Classic Maya Collapse - Cities Abandoned

One of history's unsolved mysteries is why many Maya cities were abandoned in the 9th century AD, bringing an end to the... (more)

One of history's unsolved mysteries is why many Maya cities were abandoned in the 9th century AD, bringing an end to the Classic period. Examine theories that trace this collapse to war, drought, environmental damage, or volcanic eruption. Then hear Dr. Barnhart's solution to the puzzle. (less)