Explore The Secret Underground Tunnels In South Carolina
Explore The Secret Underground Tunnels In South Carolina
Aug 26, 2024
onlyinyourstate.com
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ETERNAL HUB on Instagram: "⛰️🚧 How engineers in China turn natural caves into road tunnels. In some parts of China, mountains already hide what engineers dream of — natural caves carved by water and time over thousands of years. Instead of blasting an entirely new tunnel, engineers carefully study these caves and adapt them into road tunnels. First, geologists map the cave using 3D scans to understand: • rock strength • crack patterns • water flow • collapse risks Only caves with stable limesto
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