Q32
The Gotthard Base Tunnel in Switzerland is notable for:
A.
Longest underwater tunnel
B.
Deepest tunnel through hard rock
AnswerC.
Tunneling through lava fields
D.
Tunnel collapse during drilling
Answer: Option B
Solution
Answer: Option B
Solution:
The Gotthard Base Tunnel is the deepest and longest railway tunnel through the Alps, involving complex rock mechanics and geological mapping.