Civil Mentors Official on MSN
Inside Tokyo’s underground flood megastructure that saves the city
Tokyo sits on a floodplain, yet catastrophic flooding has nearly vanished thanks to a colossal underground engineering project. This video explores how Japan turned a geographic weakness into one of ...
Primitive Technology Idea on MSN
Unbelievable! Build the underground stone cave in the cliff to avoid wildlife
In this video, I build an underground stone cellar in a cliff, featuring an arched stone door. A pointy trap is created ...
Estonia has started constructing concrete bunkers along its border with Russia as nations on NATO's eastern flank rushes to build up land defenses. The Baltic states of Estonia, Latvia and Lithuania ...
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