I’d assume that drilling a tunnel under a mountain would be significantly cheape... | Hacker News

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		yywwbbn on Sept 12, 2024 \| parent \| context \| favorite \| on: Show HN: How much is 13B euros? I’d assume that drilling a tunnel under a mountain would be significantly cheaper than digging one in a densely inhabited city (in a seismically active area).

postcynical on Sept 12, 2024 [–]

3miles for $2bln under densely inhabitated city.

https://en.wikipedia.org/wiki/Weinberg_Tunnel

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