GBU-72 Bunker-Busters Slam Iran Missile City — Hajiabad Tunnel Entrances Destroyed but Underground Silos Still Operational

Defence affairs - Def-Geopolitics

Heavy penetrator bombs used in southern Iran strike campaign highlight the difficulty of destroying underground missile bases built into mountains near the Strait of Hormuz.

The confirmed use of heavy penetrator munitions against Iran’s Hajiabad underground missile base in Hormozgan Province signals a calculated escalation in the ongoing US-Israel strike campaign, with the operational objective focused on sealing tunnel access points rather than destroying hardened launch infrastructure deep inside the mountain complex.

Open-source analysis by OSINT observer Pataramesh indicating the possible employment of GBU-72 5,000-lb advanced penetrator bombs alongside BLU-109 JDAM warheads underscores a deliberate bunker-buster strategy designed to deny Iran access to stored ballistic missiles without risking the uncertainty of deeper structural penetration inside fortified underground missile-city networks.

Satellite imagery, strike footage, and damage assessments collectively suggest that the attack targeted entrances, surface buildings, and mobile launcher positions, reinforcing the strategic assumption that Iran’s underground missile complexes remain difficult to neutralize once construction reaches hardened vertical silo depth within mountainous terrain.

Repeated precision strikes against access portals rather than direct silo penetration indicate a force-posture decision prioritising operational suppression of launch capability over total structural destruction, reflecting the constraints faced when attacking deeply buried missile infrastructure engineered specifically to survive conventional air-delivered bunker-buster munitions.

The choice of penetrator ordnance consistent with GBU-72 and BLU-109 profiles suggests the strike planners assessed that sealing tunnel networks could produce faster degradation of Iran’s ballistic-missile readiness cycle than attempting full collapse of reinforced underground chambers protected by thick rock overburden.

Damage signatures visible in satellite imagery and strike footage imply a sequential targeting doctrine intended to create cumulative erosion around tunnel entrances, increasing the logistics burden on Iranian engineering units tasked with clearing debris before any missile launch operations can resume.

The emphasis on destroying mobile launchers and surface support structures near tunnel exits further indicates that exposed deployment phases remain the most vulnerable moment in Iran’s missile-city concept, forcing reliance on underground survivability while reducing immediate launch flexibility.

Taken together, the strike pattern supports the assessment that the campaign is designed to impose sustained operational friction on Iran’s missile forces in the Hormozgan theatre, limiting launch tempo through access denial while leaving the deeper silo network as a persistent but temporarily constrained strategic threat.

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GBU-72 Bunker-Busters Slam Iran Missile City — Hajiabad Tunnel Entrances Destroyed but Underground Silos Still Operational

Heavy penetrator bombs used in southern Iran strike campaign highlight the difficulty of destroying underground missile bases built into mountains near the Strait of Hormuz.

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By admin On Mar 21, 2026

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US bunker buster bombs struck the Haji Abad Missile CityPerang Proksi Iran-AS

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(DEFENCE SECURITY ASIA) — The confirmed use of heavy penetrator munitions against Iran’s Hajiabad underground missile base in Hormozgan Province signals a calculated escalation in the ongoing US-Israel strike campaign, with the operational objective focused on sealing tunnel access points rather than destroying hardened launch infrastructure deep inside the mountain complex.

Open-source analysis by OSINT observer Pataramesh indicating the possible employment of GBU-72 5,000-lb advanced penetrator bombs alongside BLU-109 JDAM warheads underscores a deliberate bunker-buster strategy designed to deny Iran access to stored ballistic missiles without risking the uncertainty of deeper structural penetration inside fortified underground missile-city networks.

Satellite imagery, strike footage, and damage assessments collectively suggest that the attack targeted entrances, surface buildings, and mobile launcher positions, reinforcing the strategic assumption that Iran’s underground missile complexes remain difficult to neutralize once construction reaches hardened vertical silo depth within mountainous terrain.

GBU-72 

GBU-72 Bunker Buster Bomb

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Repeated precision strikes against access portals rather than direct silo penetration indicate a force-posture decision prioritising operational suppression of launch capability over total structural destruction, reflecting the constraints faced when attacking deeply buried missile infrastructure engineered specifically to survive conventional air-delivered bunker-buster munitions.

The choice of penetrator ordnance consistent with GBU-72 and BLU-109 profiles suggests the strike planners assessed that sealing tunnel networks could produce faster degradation of Iran’s ballistic-missile readiness cycle than attempting full collapse of reinforced underground chambers protected by thick rock overburden.Perang Proksi Iran-AS

Damage signatures visible in satellite imagery and strike footage imply a sequential targeting doctrine intended to create cumulative erosion around tunnel entrances, increasing the logistics burden on Iranian engineering units tasked with clearing debris before any missile launch operations can resume.

The emphasis on destroying mobile launchers and surface support structures near tunnel exits further indicates that exposed deployment phases remain the most vulnerable moment in Iran’s missile-city concept, forcing reliance on underground survivability while reducing immediate launch flexibility.

Taken together, the strike pattern supports the assessment that the campaign is designed to impose sustained operational friction on Iran’s missile forces in the Hormozgan theatre, limiting launch tempo through access denial while leaving the deeper silo network as a persistent but temporarily constrained strategic threat.

Repeated precision impacts recorded on bomb-camera and ISR footage show targeting boxes fixed on tunnel portals carved into rocky slopes, followed by sequential detonations producing large dust plumes and debris clouds consistent with deep-penetration impacts intended to collapse access points rather than destroy internal chambers.

The visible erosion and structural collapse around entrance areas indicates that the strike plan prioritized blocking logistical access routes, a method intended to immobilize stored missiles and launch equipment inside the underground network rather than attempting high-risk direct penetration of hardened launch pits.