The earthen skyscrapers of the Mississippians
Stone palaces in the desert cliffs
Ancient science, astronomy, and alignment
The continent-spanning trade networks
What astronomical event is marked by the alignment of the central post of Cahokia's Woodhenge?
How did Mississippian builders ensure their massive clay mounds did not collapse from rain?

sonia Align the stones with the sun to discover how ancient cultures tracked the seasons.

sonia Mississippian builders at Cahokia erected massive wooden post circles to track the rising sun and mark agricultural seasons.
What material did the builders of Woodhenge at Cahokia use to track the solar calendar?
sonia Chaco Canyon Archaeoastronomy
Light cuts a dagger through the sandstone to track the cycles of the sun and the moon

sonia Ancestral Puebloans constructed over 180 miles of perfectly straight, wide roads across rugged desert terrain.
Why did Chacoan builders use timber from forests over 50 miles away to construct their great houses?
Chacoan highways: The ancient roads of Chaco Canyon were up to 30 feet wide and went straight up cliffs!
The study of how ancient societies understood and interpreted celestial phenomena. Ancestral Puebloans used these principles to align Chaco Canyon's massive stone structures with solar cycles.
