Terror Mega-Tunnel

Israel has allowed the shipment of concrete and other building material into Gaza.  This is what Israel has received in return.

IDF Uncovers Hamas Terrorist Tunnel from Gaza to Israel - Yoav Zitun

IDF forces uncovered a 1.8 km. tunnel from Absan village in Gaza to Israel's Kibbutz Ein Hashlosha. According to the IDF, the tunnel was aimed at serving Hamas in the next round of violence against the IDF. In 2006, seven Gaza terrorists used a tunnel to infiltrate Israel and abduct IDF soldier Gilad Shalit. It is believed that additional terror tunnels connecting Gaza and Israel have yet to be exposed.
(Ynet News)
    

Leak Leads to Discovery of Mega-Tunnel from Gaza - Gili Cohen

The terrorist tunnel was discovered not by chance, but based on a lead, Israeli army officials said. They believe that diggers spent one and a half years constructing the tunnel, which was completed only two months ago. The tunnel was built entirely of concrete. Its sides and floor were tiled with concrete slabs, and its ceiling was made of concrete arches, a job which took 800 tons of concrete and 25,000 concrete slabs.

The tunnel was 22 meters deep and contains an electrical system of 220 volts and a telephone line. Two exit points, several hundred meters away from each other, were located inside Israeli territory. An officer said that because of the near-industrial way in which the tunnel had been constructed, a battalion of combat soldiers could easily pass through it.

Southern Command head Maj. Gen. Sami Turgeman said, "Instead of taking care of the population and building schools, industry and employment, [Hamas] is spending the money on terrorist tunnels."
(Ha'aretz)

UPDATE: 


Tunnel Discovery: Gaza's Export Is Violence - Jonathan S. Tobin
    
Israel enforced a blockade of Gaza to prevent the import of construction materials that could be used for military purposes. Due to international pressure, Israel relaxed that blockade to allow in concrete.

Israel has now discovered a tunnel built to provide easy access into Israeli territory for terrorists to kill and/or kidnap Israelis. It was built with 500 tons of cement that had been allowed into Gaza, a terrorist enclave whose only export is violence.

So will everyone who opposed Israel's blockade of Gaza now realize they were wrong? Don't bet on it. 
(Commentary)