Gaza Tunnels Pose Challenge to Israel in War on Hamas

Islamic Jihad fighters guard a Gaza tunnel in March. (Getty Images)
Islamic Jihad fighters guard a Gaza tunnel in March. (Getty Images)
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Gaza Tunnels Pose Challenge to Israel in War on Hamas

Islamic Jihad fighters guard a Gaza tunnel in March. (Getty Images)
Islamic Jihad fighters guard a Gaza tunnel in March. (Getty Images)

Exactly ten years ago in October 2012, Israel announced the discovery of the “first offensive tunnel” in the Gaza Strip. The tunnel stretched 800 meters, from Khan Younis to a hundred meters into Israeli territory, and was 20 meters deep underground and was two meters in width and height.

Israel did not find any weapons or explosives in the tunnel, with experts speculating that Hamas was using it to kidnap Israeli soldiers. A major Israeli military commander declared to Haaretz at the time: “We will make them regret this and we will push them to despair.”

The army destroyed the tunnel, as it did others it had previously discovered. The military even set up a unit dedicated to the destruction of tunnels. It included scientists whose task was to build electronic devices that can detect the underground passages.

Then commander of the Southern Command Yoav Gallant said: “It is a war of minds between us and Hamas. We are waging it for one sole purpose: victory.” Gallant is now defense minister, and the tunnels now extend far and wide in Gaza. He still speaks of “victory” and even of genocide.

In the past ten years, the Israeli army realized that it could not eliminate the tunnel phenomenon. Rather, the tunnels have since grown and become more developed. At first, they were built to allow Hamas fighters to counter Israeli ground attacks and ambush their troops.

They then used them to kidnap soldiers and succeeded in 2014. Two soldiers were kidnapped, and they are still held by Hamas. Israel then decided to build a massive wall, stretching 65 kilometers, above and below ground to prevent Hamas from building tunnels that can extend into Israeli territory. The wall cost Israel a billion dollars, but Hamas only needed to hire contractor for 200 dollars so he can drive bulldozer into the wall and destroy a portion of it.

The movement then expanded the tunnels deep into Gaza. It constructed a massive network that can only be compared to ones in North Korea. The Israelis have not ruled out the possibility that Pyongyang, not just Tehran, may have aided Hamas in the planning.

Furthermore, Hamas may have even benefited from Israeli expertise. In 1980, it had built a whole underground floor under al-Shifa hospital in Gaza when it was still occupying the enclave.

Underground fortress

Israel preoccupied itself in recent years in monitoring the expansion of the tunnels in Gaza and inside its own territories. To destroy some of the tunnels, it used a material that would expand and harden and use up all empty space, sealing off the tunnels.

Meanwhile, Hamas took its time in enlarging its network of tunnels in Gaza. The tunnels now total around 1,300, reaching around 70 meters underground and extending 500 kilometers. Jacob Nagel, former head of Israel's National Security Council, said the tunnels are probably even longer than that, extending thousands of kilometers.

The Israeli army has claimed that it has “detailed maps” of the tunnels and was preparing the right plans to turn them into “graveyards” for Hamas leaders, who in turn, have said that the tunnels have been heavily developed in the past two years. The technology there will shock the Israelis and turn them into a huge trap for its soldiers, they have warned.

The tunnels have become a major headline of the Gaza war. Hamas leaders and some 20,000 fighters are using the tunnels, which are like an underground fortress.

'Lower Gaza’

There isn’t exactly a life in the tunnels given how difficult it can be to live there. However, they are more than just long passageways that the word tunnel implies. Hamas has in fact built an actual city - “Lower Gaza” - under Gaza. Some people have spoken of two Gazas under the ground, meaning that there is actually a third Gaza below the underground city.

The network boasts rest areas, meeting rooms, and sleeping areas. It is fully equipped and features a modern ventilation system. It holds storage for food, medicine and fuel and has its own encrypted telecommunications system that Israel has failed in deciphering, as demonstrated in Hamas’ surprise attack on October 7.

Israel has weighed its option in how to destroy the tunnels. Experts said it could seal them off with a foam material that expands and hardens in empty spaces and could enlarge to several meters thick. It could use vacuum bombs to destroy them and kill everyone using them. Hamas has stated it is aware of the options at Israel’s disposal and its fighters are ready to defy it.



Israeli Plan to Seize Gaza Alarms Many: 'What's Left for You to Bomb?'

Displaced Palestinians snatch bread loaves distributed by a charity kitchen at the Nuseirat refugee camp in the central Gaza Strip on May 5, 2025. (Photo by Eyad BABA / AFP)
Displaced Palestinians snatch bread loaves distributed by a charity kitchen at the Nuseirat refugee camp in the central Gaza Strip on May 5, 2025. (Photo by Eyad BABA / AFP)
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Israeli Plan to Seize Gaza Alarms Many: 'What's Left for You to Bomb?'

Displaced Palestinians snatch bread loaves distributed by a charity kitchen at the Nuseirat refugee camp in the central Gaza Strip on May 5, 2025. (Photo by Eyad BABA / AFP)
Displaced Palestinians snatch bread loaves distributed by a charity kitchen at the Nuseirat refugee camp in the central Gaza Strip on May 5, 2025. (Photo by Eyad BABA / AFP)

An Israeli plan to seize the Gaza Strip and expand the military operation has alarmed many in the region. Palestinians are exhausted and hopeless, pummeled by 19 months of heavy bombing. Families of Israeli hostages still being held in Gaza are terrified that the possibility of a ceasefire is slipping further away.

“What’s left for you to bomb?” asked Moaz Kahlout, a displaced man from Gaza City who said many resort to GPS to locate the rubble of homes wiped out in the war.

Israeli officials said Monday that Cabinet ministers approved the plan to seize Gaza and remain in the Palestinian territory for an unspecified amount of time — news that came hours after the military chief said the army was calling up tens of thousands of reserve soldiers.

Details of the plan were not formally announced, and its exact timing and implementation were not clear. It may be another measure by Israel to try to pressure Hamas into making concessions in ceasefire negotiations.

The war began after Hamas-led group attacked southern Israel on Oct. 7, 2023, killing some 1,200 people, mostly civilians, and abducting 251. Israel says 59 captives remain in Gaza, about 35 of whom are believed to be dead.

Israel’s ensuing offensive has killed more than 52,000 people in Gaza, many of them women and children, according to Palestinian health officials, who don’t distinguish between combatants and civilians in their count.

“They destroyed us, displaced us and killed us,” said Enshirah Bahloul, a woman from the southern city of Khan Younis. “We want safety and peace in this world. We do not want to remain homeless, hungry, and thirsty.”

Some Israelis are also opposed to the plan. Hundreds of people protested outside the parliament Monday as the government opened for its summer session. One person was arrested.

Families of hostages held in Gaza are afraid of what an expanded military operation or seizure could mean for their relatives.

“I don’t see the expansion of the war as a solution — it led us absolutely nowhere before. It feels like déjà vu from the year ago,” said Adi Alexander, father of Israeli-American Edan Alexander, a soldier captured in the Oct. 7 attack.

The father is pinning some hopes on US President Donald Trump’s visit to the Middle East, set for next week. Israeli leaders have said they don't plan to expand the operation in Gaza until after Trump’s visit, leaving the door open for a possible deal. Trump isn't expected to visit Israel, but he and other American officials have frequently spoken about Edan Alexander, the last American-Israeli held in Gaza who is still believed to be alive.

Moshe Lavi, the brother-in-law of Omri Miran, 48, the oldest hostage still believed to be alive, said the family was concerned about the plan.

“We hope it’s merely a signal to Hamas that Israel is serious in its goal to dismantle its governmental and military capabilities as a leverage for negotiations, but it’s unclear whether this is an end or a means,” he said.

Meanwhile, every day, dozens of Palestinians gather outside a charity kitchen that distributes hot meals to displaced families in southern Gaza. Children thrust pots or buckets forward, pushing and shoving in a desperate attempt to bring food to their families.

“What should we do?” asked Sara Younis, a woman from the southernmost city of Rafah, as she waited for a hot meal for her children. “There’s no food, no flour, nothing.”

Israel cut off Gaza from all imports in early March, leading to dire shortages of food, medicine and other supplies. Israel says the goal is to pressure Hamas to free the remaining hostages.

Aid organizations have warned that malnutrition and hunger are becoming increasingly prevalent in Gaza. The United Nations says the vast majority of the population relies on aid.

Aid groups have expressed concerns that gains to avert famine made during this year's ceasefire have been diminishing.

Like most aid groups in Gaza, Tikeya has run out of most food and has cooked almost exclusively pasta for the past two weeks.

Nidal Abu Helal, a displaced man from Rafah who works at the charity, said that the group is increasingly concerned that people, especially children, will die of starvation.

“We’re not afraid of dying from missiles," he said. "We’re afraid that our children will die of hunger in front of us.”