Israel Blasts Hezbollah Underground Base, Signals Shift in Southern Lebanon Conflict

Sat Sep 12 2026 13:46:16 GMT+0000 (Coordinated Universal Time)

Israel used 1,000 tonnes of explosives to destroy a 2‑km Hezbollah tunnel network, igniting quake‑level tremors and potentially reshaping southern Lebanon’s security dynamics.

The Israeli Defence Forces reported the destruction of a large underground Hezbollah complex beneath Ali Taher Ridge, employing over 1,000 tonnes of explosives that triggered seismic activity equivalent to a magnitude 4.1 earthquake. Two tunnels spanning more than 2 km were obliterated, killing or forcing the retreat of the housed Hezbollah fighters. Residents nearby described the blast as an earthquake, with roofs shaking and people fleeing toward Beirut. This operation follows Israel’s recent occupation of the ridge, bolstering its expansion of control in southern Lebanon, and occurs against a backdrop of renewed hostilities and ongoing negotiations for a ceasefire.

The Israeli Defence Forces announced the destruction of a major Hezbollah underground complex beneath Ali Taher Ridge in southern Lebanon. The blast, caused by over 1,000 tonnes of explosives, obliterated two tunnels that spanned more than 2 km (1.2 mile) below the ridge.

Shortly after the explosion, seismic sensors recorded an event equivalent to a magnitude 4.1 earthquake, a testimony to the scale of the detonation. Residents in nearby Nabatieh reported that the detonations caused their homes to shake, with many abandoning their houses for safety.

The underground complex housed a Hezbollah command centre, the Badr unit, and contained dozens of rockets, missiles, unmanned aircraft and anti‑tank weapons. The IDF said on Telegram that the detonations eliminated or forced the retreat of all associated fighters. “This was strategic infrastructure built over two decades, funded by the Iranian regime,” the statement added.

The destruction completes a mission to eliminate eight tunnels and establish a "security zone" near the Israeli‑controlled ridge, a zone Israel has maintained since the conflict resumed in March. The operation follows fresh Israeli strikes elsewhere in southern Lebanon, including Nabatieh al‑Fawqa and Mansouri.

Lebanon‑Israeli relations remain tense: former Lebanese army deployments increased outside Israeli control, while the U.N. reports that about 330,000 displaced Lebanese have been hindered from returning. Since 2 March, over 4,383 Lebanese civilians have been reported killed by Israeli strikes, without clear distinction between combatants and civilians. The Israeli side claims 40 soldiers and four civilians were killed during the same period.

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