Bilbao's Iron Ring (Spanish: Cinturón de Hierro, Basque: Bilboko Burdin Hesia), is a fortification around Bilbao in the Basque Country, Spain. It was constructed hurriedly by the Basque Government during the Spanish Civil War to help defend the city from the Nationalist forces approaching as part of their War in the North campaign.
Bilbao's Iron Ring (Spanish: Cinturón de Hierro, Basque: Bilboko Burdin Hesia), is a fortification around Bilbao in the Basque Country, Spain. It was constructed hurriedly by the Basque Government during the Spanish Civil War to help defend the city from the Nationalist forces approaching as part of their War in the North campaign.
Source: Wikipedia "Bilbao's Iron Ring" · CC BY-SA 4.0
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