A subterranean wall being built by Egypt along its border with Gaza is meant to hack the tunnel structures, which extend from the Egyptian side of the border to the Gaza’s side for distances that range between 400 meters and 1,700 meters. With many prohibitions on the ground, the tunnels have become a lucrative underground alternative. The wall construction portrays the depth of this underground urbanism, bringing the conflict between smugglers and the security to the forefront. Lina Attalah reports. Read more about Will Egypt's underground wall end the Gaza tunnel trade?