A 1.1-kilometer water reservoir hidden inside a mountain? Discover how Brazilian engineers blasted through granite to build a 110-million-liter underground marvel that still helps supply Santos and São Vicente. It’s a wild feat of engineering you have to see to believe!
#Engineering #Brazil #Infrastructure
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0:04 - A Reservoir Hidden Inside a Mountain
1:22 - Scale, Location, and Design
2:54 - The Water Crisis Sparks an Underground Plan
4:57 - Excavating the Reservoir Through Granite
8:52 - Why the Tunnel Reservoir Stands Apart
12:18 - Regional Impact and Lasting Legacy
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