General
Prötzel is a small village in Brandenburg, about 40 km north-northeast of the Berlin city center in the Barnim. In GDR times there was an air defence missile site of the National People's Army NVA, which was equipped with missiles of the type SA-2 Guideline (S-75), about 4 km northwest of the village. For this unit a helipad was registered, which is described below.