Under construction

On the picture you see part of the construction of the new Rotterdam Centraal station.

Today me and some colleagues had an excursion with our company to see the building site. They are working on the metro lines and the station, the passenger hall will be improved, more train connections with the high speed train will be made possible. and for that they need to go underground an bit. It was very interesting to see what they are doing there and how they are doing it.