Left, an "iron maiden" with its doors secured; middle, a blindfolded prisoner is forced to kneel down before the "iron maiden" in a dungeon; right, an "iron maiden" with its doors open. Etching.

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Left, an "iron maiden" with its doors secured; middle, a blindfolded prisoner is forced to kneel down before the "iron maiden" in a dungeon; right, an "iron maiden" with its doors open. Etching. Wellcome Collection. Public Domain Mark. Source: Wellcome Collection.