Hezbollah’s Tunnels: Safe Haven Against Israeli Ground Assault

Smoke rises following an Israeli airstrike in southern Lebanon. Reuters
Smoke rises following an Israeli airstrike in southern Lebanon. Reuters
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Hezbollah’s Tunnels: Safe Haven Against Israeli Ground Assault

Smoke rises following an Israeli airstrike in southern Lebanon. Reuters
Smoke rises following an Israeli airstrike in southern Lebanon. Reuters

Israel has voiced fresh concerns about Hezbollah’s tunnel network in southern Lebanon, seeing it as a major advantage for the group amid growing threats of a broader conflict along the Lebanese-Israeli border.

These concerns are supported by security reports, including one from the French newspaper “Libération” earlier this year.

The report claims that Hezbollah’s tunnels are more advanced than those of Hamas in Gaza, stretching for hundreds of kilometers with branches reaching into Israel and possibly Syria.

Experts warn that this network could pose significant challenges for the Israeli military if it decides to invade southern Lebanon.

Military expert Brigadier General Dr. Hassan Jouni says Hezbollah's tunnels are crucial for countering Israeli attacks.

“These tunnels offer a safe way to move and are a key part of Hezbollah’s strategy,” Jouni told Asharq Al-Awsat.

He added that the tunnels help balance the fight against Israel’s air superiority, making combat more about underground movements.

Jouni, former head of the Lebanese Army Command and Staff College, emphasized that the tunnels are a major strength for Hezbollah. They enable the group to move fighters, weapons, and missiles secretly, allowing for unexpected maneuvers in battle.

The Alma Research and Education Center, dedicated to researching the security challenges on Israel’s northern borders, reported that since the 2006 Lebanon War, Hezbollah, with assistance from North Korean and Iranian experts, has developed a regional tunnel network in Lebanon that surpasses Hamas’ metro in Gaza.

The center notes that southern Lebanon’s terrain—characterized by rocky hills and valleys—differs significantly from Gaza’s, making the task of digging tunnels up to 10 kilometers deep into Israeli territory particularly challenging.

The center suggests that the Israeli estimates struggle to accept the possibility that Hezbollah could have successfully excavated such extensive tunnels through this rugged terrain.

According to Alma, achieving this would be an extraordinary feat, potentially considered a major military embarrassment rather than a mere failure for Israel.

Israel targets sites it believes are military, missile, or weapon storage areas in its confrontations with Hezbollah but struggles to map or fully understand the group’s tunnel network.

Jouni points out that Hezbollah has built its tunnels with advanced techniques, benefiting from favorable conditions and possibly using technology from North Korea.

Jouni suggests that these tunnels enhance Hezbollah’s ability to conduct guerilla warfare and might even be used for military operations, potentially reaching into the occupied Palestinian territories.

Unlike Hamas, Hezbollah hasn’t publicized its tunnel network despite increasing Israeli threats and the risk of a ground invasion. This secrecy suggests Israel may lack detailed information about the tunnels and fears potential surprises.

Dr. Riadh Kahwaji, a Middle East security and defense analyst and director of the Institute for Near East and Gulf Military Analysis (INEGMA), says Hezbollah’s extensive tunnels allow safe underground movement while Israel, with its strong air superiority, can only monitor surface activity.

Kahwaji explains that, similar to Gaza, where tunnels serve various functions, Hezbollah’s network is even larger and more complex.



Lebanon’s Rocky Terrain Makes Tunnel Digging Easy for Hezbollah

Entrance to a border tunnel destroyed by the Israeli army at the Lebanon border in 2019 (AFP)
Entrance to a border tunnel destroyed by the Israeli army at the Lebanon border in 2019 (AFP)
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Lebanon’s Rocky Terrain Makes Tunnel Digging Easy for Hezbollah

Entrance to a border tunnel destroyed by the Israeli army at the Lebanon border in 2019 (AFP)
Entrance to a border tunnel destroyed by the Israeli army at the Lebanon border in 2019 (AFP)

Hezbollah is using Lebanon’s rocky landscape to dig tunnels in mountains and valleys, aiming to hide from Israeli airstrikes and launch attacks from what are considered safe areas.

Due to limited details on how these tunnels are built or their specific purposes, experts believe Hezbollah uses this method as an alternative to open combat under Israeli aircraft.

Retired Brig. Gen. Fadi Daoud told Asharq Al-Awsat that Hezbollah’s tunnel strategy forces Israel into difficult underground warfare, a challenging type of combat in military terms.

Daoud explained that tunnel networks “take away key advantages from the enemy.”

“Even though the Israeli military has a powerful air force for reconnaissance and airstrikes, tunnels prevent them from seeing targets. This has reduced the effectiveness of the air force and limits its ability to maneuver,” said Daoud.

He also noted that the Israeli military is prepared for tunnel warfare, with weapons like the Massive Ordnance Air Blast (MOAB) bomb, sponge bombs, and Bunker Buster bombs, which can destroy tunnels up to 60 meters deep. However, using these weapons depends on the situation.

Regarding Hezbollah’s tunnel network, Daoud mentioned that while there isn’t exact information, it is believed that the area from the border to seven kilometers inside Lebanon is likely covered by an underground tunnel system.

This is why Israel wants Hezbollah pushed beyond the Litani River, as it thinks there are no tunnels beyond that point. However, Daoud emphasized that these are only estimates, and no one has confirmed information.

Israeli studies suggest that Hezbollah has built a complex underground tunnel network in Lebanon, stretching for several kilometers.

These reports highlight how Hezbollah benefits from Lebanon’s natural landscape, which makes tunneling easier. Modern tunneling equipment is expensive and not widely available, even to the Lebanese government, with some tunnels taking years to complete.

Dr. Tony Nemer, a geology and seismology expert at the American University of Beirut, explained that Lebanon's rocks are mainly limestone.

When exposed to water containing carbon dioxide, the rocks form carbonic acid, which can hollow out the limestone. This natural process has led to the formation of many caves in Lebanon.

Nemer pointed out that the karstic nature of these rocks makes digging tunnels easier.

He noted that while most of Lebanon’s rocks are limestone, there are also some sandy and volcanic rocks, but these make up only 15%-20% of the country’s terrain.