Dora I

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Dora I (Dora 1) is a former German submarine base and submarine pen or bunker built in Trondheim, Norway. Construction of the bunker (designated by the Germans as DORA I) was undertaken during the Second World War. Nearby is the uncompleted Dora II (Dora 2). Trondheim was traditionally referred to as Drontheim in German, and the name DORA is the letter "D" in the German phonetic alphabet.^[1]