BEERSHEBA, Israel—A senior Israeli military official on Sunday said a massive underground barrier being built along the Gaza border to defend against Hamas tunnels should be completed in a matter of months, dealing what he said would be a serious blow to the Islamic militant group.
The Southern Command official said the structure was at the forefront of a new effort meant to rob Hamas of one of its most potent weapons.
During a 2014 war, Hamas militants on several occasions made their way into Israel through a tunnel network, though they did not manage to reach civilian areas. Israel destroyed 32 tunnels during that conflict, and since then has made neutralizing the tunnel threat a top priority.
The official, speaking on condition of anonymity under military briefing guidelines, said Hamas is now trying to restore its military capabilities, with its primary focus on building a subterranean warren of tunnels to hide from Israeli strikes and sneak into Israel to carry out attacks in a future round of fighting.
In recent weeks, Israel is believed to have begun work on a 60-kilometer (40 mile) underground barrier expected to stretch dozens of meters (yards) deep. Work crews have been spotted digging trenches and installing infrastructure in the ground.
In a briefing with reporters Sunday, the Israeli official showed video footage of heavy machinery raking the sandy border area, a series of holes drilled deep into the ground, a stretch of land the army has flooded, and some controlled explosions. The army also showed photos of simulated tunnels where soldiers train for subterranean combat.