Tunnels are gates for terrorism and facilitate external terrorist support between Gaza and Sinai. On April 12 an Egyptian law was issued, maximising the penalty of digging tunnels linking Egypt’s border to any other state to 25 years. Also, using such tunnels or being aware of their existence without reporting them is punishable. The recent discovery of a 2.8 kilometre-long tunnel between Sinai and Gaza raised questions about the parties supporting digging operations, as such work requires expensive and advanced modern equipment, as well as an extensive labour force to dig either in rocks or loose land. The process takes four to five months, while the average cost of the required equipment would be 10 million Egyptian pounds. Most of the manufacturers of such equipment do not authorise sales except to states and major engineering and construction companies