Fortification subsection 4./IV. Šibenice
From Underfoot
Q61957185
Wikimedia, Wikidata
heavy fortification construction cushion, OP-S 36a Dvoják horní casemate, OP-S 36b Dvoják dolní casemate, Šibenice, ŽSV IV Opava, Czech Republic Q213,
Individual site searches
Google custom search of specialist sites
Google custom search of general sites