ISIS Fighters Lived Here Until They Ran AwayIraqi and Kurdish forces launched their biggest push toward Mosul as ISIS operatives are forced to flee through a series of underground tunnels.Inside Underground Bunkers Where ISIS Fighters Lived Before Running for Their Lives01:53Link copiedOct. 21, 2016, 8:34 AM UTC / Updated Oct. 21, 2016, 8:34 AM UTC