Ever wonder how ancient civilizations built giant monuments without machines? These researchers may have cracked the code.

option that comes to mind. But, if we consider massive monuments like the Moai on Easter Island, there must’ve been some way that ancient peoples were able to transport such heavy material without the advent of machines. The Cambridge-based firm Matter Design has come closer to understanding this engineering feat with their research on “weightless” concrete forms. They worked with research and development at CEMEX, a building materials company, and created a way of moving stones that would typically need cranes or other equipment to lift.

The project, called Walking Assembly, was documented in a fascinating video […]

Source: Researchers Have Figured Out a Way to Move 25 Tons of Stone by Hand