Structural engineer Steve Burrows scans the sacred Inca city of Machu Picchu using 3D laser technology. His three main questions: How did the Inca build a city atop a mountain? How were the terraces constructed? And how did they supply water to the city?
π¬
Discover your next watch β randomly
Our trailer feed shows you random movies & shows one at a time. Hit Want and we'll remember it on your personal watchlist β so you never lose track of what caught your eye.