A network of underground tunnels used by Islamic State (IS; formerly ISIS/ISIL) was discovered in a retaken village on the eastern outskirts of Salamiyah, Hama province, as shown in footage captured Monday. <br /> <br />The extremist group used the underground tunnels to shelter from airstrikes and move from building to building. <br /> <br />One of the tunnels has an area of 50 square metres (538.19 square feet), as well as five rooms for meetings and training. <br /> <br />The battle to retake the entirety of Syria's Hama province from IS militants is ongoing.
