WONDER #2393: What Keeps Tunnels From Falling Down?
Question 1 of 3
_____________ engineers work hard to build safe, strong tunnels.
Question 2 of 3
Which of these is NOT taken into account before digging for a tunnel, according to this Wonder?
- Soil and rock types
- Water patterns
- Fault lines
- Airplane traffic
Question 3 of 3
This Wonder was mostly about...
- famous tunnels and why they don’t fall down.
- how to become a civil engineer.
- why London Bridge has fallen down so many times.
- what makes the London Underground the best transportation system.
Check your answers online at https://www.wonderopolis.org/wonder/what-keeps-tunnels-from-falling-down.