Popular Mechanics tracked down the stories of the longest, deepest, most expensive, and weirdest tunnels ever built. They all have interesting stories behind them, and some have innovative features, such as the 15-mile-long Laerdal Tunnel in Norway.
Driving through a windowless tunnel for 20 minutes can get a bit monotonous, so a team of psychologists and engineers focused on retaining driver concentration.
Link -Via: Unique Daily, Via: Neatorama
Thursday, January 28, 2010
The World’s 18 Strangest Tunnels
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