5 ms·
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).
by yywwbbn 2y ago
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 2y ago3miles for $2bln under densely inhabitated city. https://en.wikipedia.org/wiki/Weinberg_Tunnel https://en.wikipedia.org/wiki/Weinberg_Tunnel