bunkers (type FB-75) and nine small ones (type FB-3), made of prefabricated concrete elements (FB = prefabricated bunker). The FB-75 type bunker had an intermediate floor level, where the sleeping areas were located, and an emergency exit. Each individual shelter has a main corridor and two airlocks. Over the top is a 3 to 5 m earth covering, from which protrude dozens of ventilation tubes.

In 1985, on the 30th anniversary of the National People's Army (NVA),