The Israeli military detonated 1,100 tons of explosives beneath a ridge in southern Lebanon on Thursday, collapsing a sprawling Hezbollah underground complex that Israeli officials say took more than two decades to build with Iranian money. The blast was so powerful the U.S. Geological Survey registered it as a magnitude 4.1 earthquake, with tremors felt dozens of miles away.
The target was the Ali al-Taher ridge, roughly ten miles from the Israeli border, a position Prime Minister Benjamin Netanyahu and Defense Minister Israel Katz described as the planned staging base for what they called Hezbollah’s intended “conquest of the Galilee.” Israeli officials said the underground fortress stretched over a mile wide and housed Hezbollah’s Badr unit command center, along with dozens of Iranian-made rockets, missiles, drones, anti-tank missiles, and hundreds of mines and explosive devices.
The operation marks another step in Israel’s systematic campaign to dismantle Hezbollah’s military infrastructure in southern Lebanon, a campaign that began after Israel invaded in March in response to Hezbollah attacks. For those keeping score: this is what it looks like when a nation decides its northern communities will no longer live under the shadow of a terror army’s gun emplacements.
The IDF’s 36th Division, commanded by Brig. Gen. Yiftach Norkin, led the demolition. Norkin told the Jerusalem Post it was “one of the most complex operations we have carried out.”
“We operated above and below ground, facing threats from near and far, with determination and while maintaining strict protection of our forces. Along the way, we dealt with obstacles and collapses, but continued to strive to complete the mission, the destruction of the underground tunnels on the Ali al-Taher ridge and the enemy infrastructure in the area.”
The operation began with feints and deceptive maneuvers before soldiers and drones moved into the tunnel network. The IDF released footage on Friday showing the interior of the complex, a maze built with Iranian funding over more than twenty years, according to the joint statement from Netanyahu and Katz.
Approximately 50 Hezbollah fighters were trapped inside and continued to resist. The IDF offered surrender terms. Some fighters fled. Others refused. Jerusalem Post sources described Hezbollah making what they called “desperate calls” to Iran for help. Iran, those sources reported, declined to get involved. The IDF stated that no Iranian personnel were captured or killed inside the complex.
The question of what military strikes actually destroy is one that haunts every operation of this kind. In this case, the seismic data speaks for itself.
This was not the first time Israel has demolished a major Hezbollah tunnel complex in the region. In a prior operation at the Beaufort Ridge area of southeastern Lebanon, the IDF used approximately 700 tons of explosives to collapse another tunnel network that also served as a command center for Hezbollah’s Bader Unit, as the New York Post reported. That site sat roughly 3.7 miles from Metula and the Galilee Panhandle. Netanyahu said at the time that the demolitions were “part of the IDF’s systematic operation to destroy all of Hezbollah’s terror infrastructure in Southern Lebanon.”
The Ali al-Taher operation used significantly more explosives, 1,100 tons compared to 700, suggesting a larger and more fortified complex. Both sites shared a common profile: Iranian-funded, built over decades, designed to give Hezbollah fire dominance over Israeli border communities.
France24 reported that during negotiations with Iran in June, the United States proposed allowing the Lebanese Army to take control of the Ali al-Taher ridge while Hezbollah evacuated. Hezbollah refused. That refusal now looks like a costly miscalculation. The infrastructure Iran spent decades funding is rubble.
The broader diplomatic context matters here. As global leaders have weighed in on the Iran peace agreement nearing completion in Switzerland, Hezbollah’s patron has been navigating pressures from multiple directions, diplomatic engagement on one front, the steady destruction of its proxy’s military assets on another.
The language from Netanyahu and Katz was direct and pointed. Their joint statement, published on the Israeli government’s official website, laid out both the strategic rationale and the forward posture:
“This was strategic terror infrastructure built over two decades, with Iranian funding and planning. The terror infrastructure and the command center on the ridge were designed to serve as the staging base for the conquest of the Galilee, and had observation and fire dominance over Metula and Kiryat Shmona. Their destruction completes the achievement of operational control over the Ali Taher ridge, above and below ground.”
The statement went further, making clear that Israel intends to maintain its presence:
“The IDF will remain in the security zone and will continue destroying terror infrastructure and thwarting any attempt by the Hezbollah terrorist organization to re-establish itself and restore its capabilities. The State of Israel will continue to defend the northern communities from within Lebanon, and any attempt to harm our citizens and our forces will be met with force.”
That language, “from within Lebanon”, is worth noting. Israel is not signaling withdrawal. It is signaling sustained presence in a security zone it now controls above and below ground.
IDF officials told the Jerusalem Post that the loss represented a “devastating blow ‘both psychologically and physically’ for Hezbollah.” Fox News cited analysts who said Hezbollah had hoped to use the Ali al-Taher base as a staging ground for what they described as its own “October 7-style invasion of northern Israel.” Those same analysts said IDF operations have eliminated up to 90 percent of Hezbollah’s rocket and missile inventory, a figure attributed to unnamed analysts, not to the IDF directly.
The ongoing debate in Washington over Iran war powers and munitions supply adds another layer. Israel’s ability to sustain operations of this scale depends in part on the defense-industrial pipeline, a subject that has created friction in Congress.
The human impact of the blast reached well beyond the ridge. A resident of Nabatieh, a city in southern Lebanon, described the moment to the BBC:
“The sky lit up and about 15 seconds later we heard the terrifying sound. The house shook all together as if it was literally an earthquake.”
The resident said “people were screaming and children were crying.” Some neighbors attempted to evacuate to Beirut.
None of this is easy to hear. War produces suffering on all sides, and Lebanese civilians living near Hezbollah’s military installations bear a burden they did not choose. But the responsibility for embedding a mile-wide military fortress beneath civilian territory lies with the organization that built it, and with the Iranian regime that funded it.
That is a distinction too many Western commentators refuse to draw. Hezbollah spent more than twenty years constructing an underground war machine designed to launch an invasion of Israel. It housed rockets, missiles, drones, anti-tank weapons, and hundreds of mines. It was not a defensive position. It was an offensive staging base, built in deliberate proximity to civilian populations, a pattern Hezbollah has repeated across southern Lebanon.
The recent defense bill debate in the House, where Israel-related provisions split both parties, underscores how contested even basic military support for allies has become in Washington. Israel, for its part, is not waiting for consensus.
Several questions remain open. The exact casualty count among the approximately 50 Hezbollah fighters trapped inside the tunnels has not been confirmed. The IDF has not disclosed whether any of its own soldiers were killed or wounded during the operation. The fate of fighters who fled the complex is unknown.
The 90 percent figure for Hezbollah’s degraded rocket and missile inventory, while widely cited, comes from unnamed analysts rather than official IDF assessments. It should be treated as an estimate, not a verified count. And while the IDF says it found no Iranian personnel inside the complex, the full extent of Iranian involvement in the tunnel network’s construction and command structure has not been detailed publicly.
What is clear is the scale. A 1,100-ton detonation that registers as a 4.1 earthquake is not a surgical strike. It is the deliberate erasure of a strategic military asset that took a generation to build. The IDF had announced operational control over the ridge the prior week and then set about clearing the tunnels before bringing the whole thing down.
The broader campaign in southern Lebanon, part of a wider pattern of military strikes against hostile actors across the region, continues. Netanyahu and Katz have made clear that the IDF will remain in its security zone and will continue dismantling whatever Hezbollah tries to rebuild.
Hezbollah spent twenty years and untold Iranian money building a fortress designed to threaten Israeli families in Metula and Kiryat Shmona. The U.S. offered a diplomatic off-ramp in June. Hezbollah refused. Now the fortress is gone, the seismographs have the receipts, and Iran won’t even return the calls.
When you build your war machine under a ridge ten miles from a country that takes its survival seriously, the only real question is when, not whether, the ground shakes.
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