After exploring the offices, we went downstairs and found a relatively small basement. There we found the remains of the electric control panels, distribution boards and breaker boxes. As it was pretty dark down there, I couldn't resist and got out some of my glow sticks:
From the basement, we went on to another building. It was also a huge factory hall with steel beams and lots of glass elements in the roof.
The glass in the roof and the holes in the walls and the wooden roofs of the adjacent buildings made for fantastic light effects on the floor and walls.