Iran is expanding a vast security perimeter around two heavily fortified tunnel complexes near its main nuclear site, raising fresh alarms in Washington and Jerusalem amid renewed negotiations over Tehran’s nuclear ambitions.

A new report from the Institute for Science and International Security, based on commercial satellite imagery taken March 29, suggests the underground sites beneath Mt. Kolang Gaz La may soon become operational. The facilities—under construction for several years—are situated near Natanz, the heart of Iran’s nuclear program.

The analysis, led by institute president David Albright, highlights hardened tunnel entrances and a network of high wall panels encircling the mountain. The security perimeter on the north side connects directly to the Natanz facility, which suffered a major act of sabotage in 2020 widely attributed to Israeli intelligence.

The complexes are being excavated at significantly greater depths than the Fordo enrichment facility near Qom, suggesting Iran’s intention to shield sensitive operations from potential airstrikes or sabotage. Tehran has barred United Nations nuclear inspectors from accessing the new sites, fueling concerns among Western analysts.

Albright warns that the tunnels may be intended to house advanced centrifuges or components of Iran’s growing stockpile of highly enriched uranium. Such materials could be rapidly converted into fuel for a nuclear weapon, should Iran make the decision to cross that threshold.

The report comes as the United States and Iran prepare for a third round of negotiations this weekend aimed at reviving restrictions on Iran’s nuclear program. Talks have resumed amid heightened regional tensions, as Israeli leaders continue to warn that time is running out to prevent Iran from becoming a nuclear-armed state.

Iran has publicly said that one of the tunnel complexes will house centrifuge production, replacing the sabotaged facility at Natanz. But with inspectors locked out and construction accelerating, international skepticism is mounting.

(YWN World Headquarters – NYC)