Massive... part of EC20 in HDR

Beautiful day today!
So while it was quiet (only one unit tunning and no maintenance people around) I had the chance to shoot some pictures outside of unit EC 20 and process them to HDR.
This is part of the combustion air system with huge ducts coming from the two main ventilators (1 Megawatt each at 10.000Volts) and leading to the boiler furnace. A small van can drive through those ducts....
Not in use anymore.... Unit will never be in service anymore.

Better in LARGE....