“When Iraqi forces pushed the Islamic State out of Qayyarah West Airfield in July, the militants left behind an obliterated and unusable runway. During their two-year occupation of the strategically crucial airfield south of Mosul, ISIS dug trenches in it, tore it up with an excavator-mounted jackhammer, littered it with massive concrete T-walls, and detonated explosives to riddle it with craters. They dumped debris in the holes, and left the airfield booby-trapped with deadly explosives. And they destroyed or severely damaged facilities such as the air traffic control tower.”
Source: Airmen resurrect Iraqi airfield wrecked by ISIS, in time for Mosul fight