Full Breakdown
Israel’s Demolition of Hezbollah’s Ali al-Taher Ridge Tunnel Network and the Ongoing Security Zone
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Core Operation and Immediate Outcomes
On a Thursday in early September 2026, the Israel Defense Forces (IDF) detonated more than 1,100 tonnes of explosives to destroy a Hezbollah underground complex beneath the Ali al-Taher Ridge in southern Lebanon. The tunnel system stretched about 5.4 km and comprised eight underground complexes with command rooms, weapons stores, generator rooms, living quarters, showers and a kitchen. The IDF said the network held drones, unmanned aircraft, machine guns, anti-tank missiles, mines and RPG rockets.
The blast generated a magnitude-4.1 tremor recorded by the United States Geological Survey. Israeli officials said the operation forced the remaining Hezbollah fighters—estimated at roughly 50—to flee. In the two weeks surrounding the demolition, Israeli strikes in the area killed at least 29 civilians, including 12 members of a single family in an air raid on Kfar Ramman.
Background & Context
Hezbollah has built an extensive network of underground facilities across southern Lebanon over two decades to offset the IDF’s conventional advantages. The Ali al-Taher Ridge, overlooking the Nabatieh plateau and Beaufort Castle, served as a command-and-control hub for the group’s Badr Unit. The IDF attributes the tunnels to Iranian funding and direction.
The operation followed IDF actions that began with the capture of the ridge in mid-August 2026 and continued with the discovery of Hezbollah rocket launchers in the Mount Dov area on 15 September 2026. The IDF also seized weapons and uniforms in the West Bank village of Talfit that day.
Official Statements & Responses
- Prime Minister Benjamin Netanyahu called the demolition a “massive victory” and said Israel will continue to destroy terrorist infrastructure.
- Defence Minister Israel Katz said the ridge is part of the “yellow line” security zone covering 700 sq km and warned, “Anyone who approaches the ridge will be destroyed.” He added Israel will not withdraw until Hezbollah is disarmed.
- IDF spokesperson Brig. Gen. Effie Defrin said the tunnels were built over two decades with Iranian funding and that all remaining terrorists were killed or fled.
- Senior Israeli official (familiar with the Rome memorandum) criticized the Lebanese army for “dealing with cosmetics” and failing to collect weapons or destroy Hezbollah infrastructure.
- Hezbollah has not publicly acknowledged the loss and has not claimed any attacks on Israel since 20 June.
Conflicting Reports & Gaps
- Deterrence vs. reconstruction: Assessments differ on Hezbollah’s capacity to rebuild comparable facilities.
- Casualty figures: The civilian death toll of at least 29 comes from Al Jazeera; no alternative figure is provided.
What’s Next
The IDF has redeployed to positions along the “yellow line” ceasefire demarcation, maintaining surveillance and fire control over the ridge while retaining forces at the Beaufort complex. Defence Minister Katz indicated the zone will remain under Israeli control until Hezbollah is fully disarmed, and Lebanese and Israeli ambassadors are scheduled to meet at the U.S. State Department next week to discuss implementation of the June framework agreement. No further Israeli withdrawals are planned pending verification of Hezbollah’s disarmament.