Advanced Ancient Technology That Modern Science Still Can’t Replicate

Heat-Ray Weapon - https://classicalwisdom.com/archimede...
Roman Concrete -
Viking Compasses -
Silphium - https://en.wikipedia.org/wiki/Silphium
Flexible Glass - https://en.wikipedia.org/wiki/Flexibl...
Damascus Steel - https://en.wikipedia.org/wiki/Damascu...
Greek Fire - https://en.wikipedia.org/wiki/Greek_fire

soundtrack: "Expeditionary"
Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/b...