World's longest and deepest tunnel is 35 miles under mountains — 20 minute journey

The high-speed rail tunnel extends as far down the mountains as some of the deepest mines on the planet

Black News Black News
May 3, 2026 - 05:19
World's longest and deepest tunnel is 35 miles under mountains — 20 minute journey
The high-speed rail tunnel extends as far down the mountains as some of the deepest mines on the planet
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