The €1 billion tunnel will be 3.4 kilometres long, 16 metres wide and 45 metres beneath sea...
https://www.maritimejournal.com/marine-construction/ports-of-genoa-starts-1-billion-subsea-tunnel/1493753.article
A tunnel being built at the Ports of Genoa will link the east and west sides of the city by being dug underneath the port basin.
https://www.maritimejournal.com/marine-construction/ports-of-genoa-starts-1-billion-subsea-tunnel/1493753.article
Ports of Genoa starts €1 billion subsea tunnel
www.maritimejournal.comA tunnel being built at the Ports of Genoa will link the east and west sides of the city by being dug underneath the port basin.