World's longest underwater railway tunnel will cost £3.2bn and stretch 10 miles

Summary
By 2028, the world's longest underwater railway tunnel is expected to be in operation, and it will mean some journeys will be cut by over three hours
Description from Daily Express.
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World's longest underwater railway tunnel will cost £3.2bn and stretch 10 miles
By 2028, the world's longest underwater railway tunnel is expected to be in operation, and it will mean some journeys will be cut by over three hours