The tunnel was the fifth to be found and destroyed by the IDF in recent months.

The Israeli army destroyed a Hamas tunnel which infiltrated into Israeli territory overnight Sunday, IDF Spokesperson Brig.-Gen. Ronen Manelis stated.
Calling it a “significant tunnel,” Manelis stated that Hamas began building it following the end of Operation Protective Edge in 2014 and that “the tunnel was ready for use.”

http://www.jpost.com/Arab-Israeli-Conflict/Ready-for-use-Hamas-tunnel-destroyed-by-IDF-549847