This is bunker CTF 35.
The bunker is located within the sector Flémalle-Boncelles of the second line of defense for the city of Liège, la Position Fortifiée de Liège 2, PFL 2. The bunker is located at Marchandise Wood at Seraing.
CTF stands for 'Centraux téléphoniques' which can be translated as a bunker for telephone exchange. The bunker was not intended as a bunker in de line of defense or shelter. Within the PFL area there were 34 CTF-bunkers (some of the planned and numbered bunkers were not built ore ready when the war broke out). They provided communication between the forts and the bunkers.
typical for this kind of bunkers is that they do not have gunopenings. On first sight one might think dat the opening next to the door was for a cannon or machinegun. But this is an escape hatch. The door is not the original one. It was placed to keep visitors out.
When after the war the bunkers lost their strategic importance for the defence of Belgium, the iron shutters and doors were sold as scrap.
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