Italian contractor Astaldi has begun drilling two parallel tunnels as part of its S7 dual carriageway project in Poland.
Each tunnel, between Naprawa and Skomielna Biala and under the Lubon Maly massif, will each be just over 2km long.
Astaldi, based in Rome, won the three-year S7 dual carriageway project worth around €225 million in 2016
Work includes 38 bridges and viaducts and three motorway services. There will also be 25km of access roads and two junctions.
The north-south S7, when complete