When the offensive to retake Mosul began in October 2016, Iraqi and coalition forces swiftly overran many IS-controlled towns and villages surrounding Mosul. But in Iraq’s densely-populated second city, the battle was waged one neighborhood at a time as survivors hid in basements or fled.

Click through the maps to see the progress of the conflict, then click on the red pins to watch Heather Murdock’s frontline reporting.