Follo Line Railway Tunnels: 2/3 of the proyect completed| ACCIONA

Excavated 66% of the tunnels of the Follo Line project (Norway, Scandinavia).
The tunnels are each 19,5 km long and have an internal diameter of 8.80 m. They have been dug into the rock by four double shield tunnelling machines. Once completed, the twin tunnels - designed for trains reaching up to 250km/h - will be the longest railway tunnels in Scandinavia.
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[@Negociando_ando]

Excelente obra, muy buena!!!