The IDF uncovered a massive Hamas attack tunnel leading from Khan Younis, in the southern Gaza Strip, into Israel, complete with an electrical supply and phone lines.

The tunnel might have been intended for attacking or kidnapping soldiers, or for moving terrorists from Gaza into Israel to commit an atrocity against civilians in border towns and villages, army sources said Sunday.

It took Hamas over a year to complete, and is tall enough inside to allow people to stand fully upright as they travel along it. The tunnel is buried some 20 meters underground as it crosses the Gaza border. A security source said it was the most well-designed terror tunnel found by the IDF to date.  The tunnel was constructed using approximately 24,000 Israeli concrete slabs which the IDF had permitted into Gaza to ease the crisis in the civilian construction sector,