Dragon's teeth are pyramidal anti-tank obstacles of reinforced concrete first used during the Second World War to impede the movement of tanks and mechanised infantry. The idea was to slow down and ch
Dragon's teeth near Aachen, Germany, part of the Siegfried Line
World War II dragon's teeth at Fairbourne Beach, Wales, in 2009, designed to stop tanks landing
Dragon's teeth on GHQ Line near Waverley Abbey, Surrey in 2006
United States Army troops passing through dragon's teeth on the Siegfried Line in 1944.
Alpine Wall
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The Alpine Wall was an Italian system of fortifications along the 1,851 km of Italy's northern frontier. Built in the years leading up to World War II at the direction of Italian dictator Benito Musso
Opera Croda Sovra i Colsei, on the Passo Monte Croce Comelico.
Denti di Drago near Graun im Vinschgau.
Bunker 9 near Toblach.
The bunker n. 13 near Malles Venosta.