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.



Here’s What Happens Next During the Ceasefire in Gaza

Palestinian former inmates of the Ofer military prison are welcomed upon arriving to Ramallah after being released as part of the Israel-Hamas ceasefire deal, in the West Bank city of Ramallah, 25 January 2025. (EPA)
Palestinian former inmates of the Ofer military prison are welcomed upon arriving to Ramallah after being released as part of the Israel-Hamas ceasefire deal, in the West Bank city of Ramallah, 25 January 2025. (EPA)
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Here’s What Happens Next During the Ceasefire in Gaza

Palestinian former inmates of the Ofer military prison are welcomed upon arriving to Ramallah after being released as part of the Israel-Hamas ceasefire deal, in the West Bank city of Ramallah, 25 January 2025. (EPA)
Palestinian former inmates of the Ofer military prison are welcomed upon arriving to Ramallah after being released as part of the Israel-Hamas ceasefire deal, in the West Bank city of Ramallah, 25 January 2025. (EPA)

The first week of the latest ceasefire between Israel and the Hamas group is complete. Hamas has begun to release hostages and Israel has freed nearly 300 Palestinian prisoners.

But the deal has hit its first major complication. Israel on Saturday said a female civilian hostage named Arbel Yahoud was supposed to be released and it has delayed the planned return of hundreds of thousands of displaced Palestinians to northern Gaza.

Here’s a look at what’s ahead in the five remaining weeks of the ceasefire's first phase.

What’s happened so far

This is the second ceasefire in 15 months of the deadliest and most destructive war between Israel and Hamas, which controls Gaza. The first occurred over a year ago and lasted a week. The current ceasefire is longer and holds the potential to end the war, though the steps toward that are vastly more challenging than what’s unfolding now. The mediators are Qatar, Egypt and the United States.

Early this week, the first three Israeli hostages held in Gaza were released and the first 90 Palestinian prisoners held by Israel were released several hours later. On Saturday, another four hostages and 200 Palestinian prisoners were released.

Meanwhile, Israeli forces have pulled back to buffer zones inside Gaza, fighting has stopped, hundreds of trucks carrying humanitarian aid have entered the territory and many Palestinians displaced by the war have been returning to what remains of their homes and communities.

What’s next

Saturday was Day 7 of the ceasefire. Starting on Day 14, next Saturday, three hostages should be released every seven days in exchange for more Palestinian prisoners.

By the end of the 42 days, all living women, children and older people held by the fighters should be freed. Eventually, bodies of hostages might be included in the releases, as Israel believes at least a third of the more than 90 captives still inside Gaza were killed in the Oct. 7, 2023 attack that triggered the war or have died in captivity.

By Sunday, Israel was meant to allow Palestinians to return to badly hit northern Gaza. But Israel now says Palestinians will not be able to cross north through the Netzarim corridor that bisects the territory east to west because Yahoud had not been freed.

The deal called for the release of civilian women on Saturday and soldiers were freed instead. It was not immediately clear why Yahoud was not released.

Hamas said it held Israel responsible for “any delay in implementing the agreement and its repercussions.”

A senior Hamas official said the group told mediators that Yahoud will be released next week. An Egyptian official involved in negotiations called the matter a “minor issue” that mediators were working to resolve. Both spoke on condition of anonymity because they were not authorized to discuss the matter publicly.

Already, hundreds of anxious Palestinians were gathering and waiting to cross into northern Gaza, which like much of the rest of the territory has been largely destroyed.

One Palestinian was shot and killed near the Netzarim corridor on Saturday, according to Al-Aqsa Martyrs Hospital in Deir al-Balah. Israel's military didn't immediately comment.

After the first six weeks

In the ceasefire’s second phase, all remaining hostages are to be released in return for a complete Israeli withdrawal from Gaza and a “sustainable calm.” Talks about Phase 2 are set to begin on Day 16, Feb. 3.

But a lot remains to be discussed. Israel has said that after the ceasefire's first phase, it will decide how to proceed.

Israel has said it won’t agree to a complete withdrawal from Gaza until Hamas’ military and political capabilities are eliminated. Hamas says it will not hand over the last hostages until Israel removes all troops from the territory.

Both sides will have to agree to a plan for governing Gaza. Hamas has said it would be willing to step aside, but it may still seek a hand in any future government, which Israel has rejected. And Hamas is unlikely to give up its weapons.

If all sides reach the third phase, it is likely to be less contentious. The bodies of remaining hostages would be returned in exchange for a three- to five-year reconstruction plan in Gaza, but who will pay for it remains unclear.