IRBIL, Iraq (AP) — Under the Iraqi town of Sinjar, Islamic State group militants built a network of tunnels, complete with sleeping quarters, wired with electricity and fortified with sandbags. The Associated Press obtained extensive video footage of the tunnels, which were uncovered by Kurdish forces that took the city in northwestern Iraq earlier this month after more than a year of IS rule. "Daesh dug these trenches in order to hide from airstrikes and have free movement underground as well as to store weapons and explosives," Eado said using an Arabic acronym for the Islamic State group. The video, shot by a freelancer touring the town with Kurdish fighters, showed two tunnels running several hundred meters (yards), each starting and ending from houses, through holes knocked in walls or floors. IS has been digging tunnels for protection and movement throughout the territory it controls in Iraq and Syria, even before the U.S.-led coalition launched its campaign of airstrikes against the group more than a year ago.