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The German Karl Emil Biel (1838-1915), who made Portugal his second homeland, documented the expansion of the railway in the Center and North of our country, recording powerful images that oppose the chaos of nature, with its apparent indomitable face, to the industrial action of man. The arrogance of progress then deliberately imitated the arrogance of Prometheus. Biel adds to an enthusiastic defense of man's nineteenth-century and industrial progress, an indelible admiration for Nature.