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A mystery woman has covertly provided the world with a rare glimpse of life in the heartland of the Islamic State using a camera concealed beneath her niqab. The extraordinary footage was taken in the Syrian city of Raqqa, the 'capital' of the militant regime since March. She is forced to wear the traditional Islamic clothing, which covers the entire face except for the eyes, under the strict Sharia law imposed by ISIS, which has taken vast swathes of Iraq and Syria in a bloody campaign. Men wielding Kalashnikov assault rifles are seen everywhere in the city, which is about 100 miles from Aleppo, Syria's largest city. But it is not just men who have taken up arms to defend their nascent regime. The film shows a woman in a niqab taking children to the park - with a rifle slung over one shoulder (left).