Chilling footage has emerged showing the elaborate tunnel systems that Hamas terrorists have been using to move weapons, hostages and stage attacks on Israel. It shows militants using metal rods and shovels to dig the tunnels. The militants can be seen dressed in full military fatigues with some obscuring their faces with headscarves, balaclavas or wearing camouflage paint. The first Hamas tunnels were built in 2007 between the Gaza Strip and Egypt and were designed for smuggling consumer goods to bypass the Israeli blockade. The underground network now branches hundreds of miles through the Gaza Strip reaching the towns of Khan Younis, Jabalia, and the Shati refugee camp.