N-S 73 "Jerab" is a middle weight infantry casemate of fort Dobrosov which belongs to the Czechoslovakian border defence line built between 1935 and 1938. The main task of this line was to protect the country against a German or Hungarian invasion. OP-S 26 received damage during the making of a German propaganda film about the French Maginot Line.
The bunker today:
It is currently private property.
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