A railway station?

Actually not.  It is  the floor of a shield for timber under the roofing sheets. There are holes between the floor blanks and I moved the camera.   I used this shield as a scaffold when building a base where I could screw the roofing sheets.  As a hole the old shield where I put the roofing shields is 17 meters long and there were different parts which made the building more difficult. I worked alone 19 days and I had only one man lifting the 6.6 meters roofing sheets on the roof. 

Another view here.
I am an amateur as a carpenter and I am very proud I could do this.  I got advises from professional carpenters.