Four such tunnels have been discovered this year.
tunnel
Poland’s longest tunnel to slash train journey times from Kraków
Journey times will be reduce by as much as two thirds.
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Poland’s longest underwater tunnel opens amid political dispute
The 1.5 kilometres tunnel connects the city of Świnoujście to mainland Poland by road for the first time.
EU official prevented from speaking at opening of EU-funded tunnel in Poland
Over half the cost of the investment has been covered by EU funds.
Poland’s longest road tunnel opens in Warsaw
The 2,335 metre-long tunnel completes the capital’s southern ring road.
Poland’s longest non-urban tunnel over halfway completed
The tunnel in Lower Silesia will be 2.3 kilometres long when complete.
