Saturday 29th March 2025
Difficulty: Medium
Tunnels (Quiz #862)
Photo by Jakob Søby (Unsplash)
1. Which major river was the first to have a tunnel built under it (in 1883)?
2. The Holland Tunnel opened in 1927 between Manhattan and New Jersey. It is about 2.5 miles long and is ventilated by 84 fans. How long does it take them to completely change the air in the tunnel?
3. The Lærdal Tunnel in Norway is the longest road tunnel in the world, at 24.51 km (15.23 mi). It consists of four sections of tunnel, separated by...what?
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