In pictures: Damaged UNESCO-listed ancient city of Hatra

The ancient city is one of the heritage jewels of Iraq
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UNESCO-listed ancient city of Hatra, south of Mosul. Iraqi forces retook the town of Hatra, southwest of Mosul, on the third day of an operation that saw them wrest back the archeological site from the ISIL group. The ancient city is one of the heritage jewels of Iraq and was damaged by IS after they took over large parts of the country three years ago. (AHMAD AL-RUBAYE/AFP/Getty Images)
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UNESCO-listed ancient city of Hatra, south of Mosul. Iraqi forces retook the town of Hatra, southwest of Mosul, on the third day of an operation that saw them wrest back the archeological site from the ISIL group. The ancient city is one of the heritage jewels of Iraq and was damaged by IS after they took over large parts of the country three years ago. (AHMAD AL-RUBAYE/AFP/Getty Images)
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UNESCO-listed ancient city of Hatra, south of Mosul. Iraqi forces retook the town of Hatra, southwest of Mosul, on the third day of an operation that saw them wrest back the archeological site from the ISIL group. The ancient city is one of the heritage jewels of Iraq and was damaged by IS after they took over large parts of the country three years ago. (AHMAD AL-RUBAYE/AFP/Getty Images)
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UNESCO-listed ancient city of Hatra, south of Mosul. Iraqi forces retook the town of Hatra, southwest of Mosul, on the third day of an operation that saw them wrest back the archeological site from the ISIL group. (AHMAD AL-RUBAYE/AFP/Getty Images)
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UNESCO-listed ancient city of Hatra, south of Mosul. Iraqi forces retook the town of Hatra, southwest of Mosul, on the third day of an operation that saw them wrest back from the ISIL group the archeological site. (AHMAD AL-RUBAYE/AFP/Getty Images)
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UNESCO-listed ancient city of Hatra, south of Mosul. Iraqi forces retook the town of Hatra, southwest of Mosul, on the third day of an operation that saw them wrest back the archeological site from the ISIL group. The ancient city is one of the heritage jewels of Iraq and was damaged by IS after they took over large parts of the country three years ago. (AHMAD AL-RUBAYE/AFP/Getty Images)
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Remains of a statue at the UNESCO-listed ancient city of Hatra, south of Mosul. Iraqi forces retook the town of Hatra, southwest of Mosul, on the third day of an operation that saw them wrest back the archeological site from the ISIL group. The ancient city is one of the heritage jewels of Iraq and was damaged by IS after they took over large parts of the country three years ago. (AHMAD AL-RUBAYE/AFP/Getty Images)
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UNESCO-listed ancient city of Hatra, south of Mosul. Iraqi forces retook the town of Hatra, southwest of Mosul, on the third day of an operation that saw them wrest back the archeological site from the ISIL group. The ancient city is one of the heritage jewels of Iraq and was damaged by IS after they took over large parts of the country three years ago. (AHMAD AL-RUBAYE/AFP/Getty Images)
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Remains of statues and damaged stones in the UNESCO-listed ancient city of Hatra, south of the northern Iraqi city Mosul. Iraqi forces retook the town of Hatra, southwest of Mosul, on the third day of an operation that saw them wrest back the archeological site from the ISIL group. The ancient city is one of the heritage jewels of Iraq and was damaged by IS after they took over large parts of the country three years ago. (AHMAD AL-RUBAYE/AFP/Getty Images)
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Damaged statues at the UNESCO-listed ancient city of Hatra, south of Mosul. Iraqi forces retook the town of Hatra, southwest of Mosul, on the third day of an operation that saw them wrest back the archeological site from the ISIL group. The ancient city is one of the heritage jewels of Iraq and was damaged by IS after they took over large parts of the country three years ago. (AHMAD AL-RUBAYE/AFP/Getty Images)