Israel Tracks Iran’s ‘Pickaxe Mountain’ Nuclear Shift, Warning of Deepened Strike Risk
Israeli and U.S. officials say Iran has moved thousands of uranium-enrichment centrifuges into tunnels dug deep inside Pickaxe Mountain near Natanz, a site military planners consider extremely hard to destroy. The relocation, reportedly completed after last year’s conflict, has already been floated in talks with Donald Trump as a potential strike target. We examine what this move reveals about Iran’s strategy, why it complicates any future attack plans, and how it feeds the argument for renewed large-scale strikes.
Iran has shifted a significant part of its nuclear program deeper underground, moving thousands of uranium-enrichment centrifuges into fortified tunnels carved into Pickaxe Mountain near the Natanz complex, according to Israeli and U.S. assessments. The move hardens Tehran’s nuclear infrastructure against airstrikes and leaves Israeli and American leaders facing a starker choice between accepting a more resilient program or contemplating far more risky military options.
Israeli intelligence believes the relocation to Pickaxe Mountain took place after last year’s round of conflict, part of a deliberate effort by Tehran to protect its most sensitive nuclear assets, according to people familiar with the assessments. U.S. officials have reached similar conclusions, as reported in major Western media, describing thousands of centrifuges now housed in tunnels built deep within the mountain. The site is considered one of the most difficult in Iran to destroy, even with the most advanced conventional bunker-busting munitions.
The political layer is already visible. Israeli leaders have reportedly urged Donald Trump to consider Pickaxe Mountain a potential strike target, and the former U.S. president has publicly described it as such. That advocacy suggests that Jerusalem sees the new underground complex not just as a technical challenge but as a focal point for any renewed debate in Washington over whether to launch large-scale attacks on Iran’s nuclear infrastructure.
For Israeli planners, the human and operational stakes are immediate. Pilots tasked with penetrating heavily defended airspace to reach a target buried beneath a mountain face higher risks than in previous campaigns against above-ground or shallowly buried sites. Missile crews must account for the possibility that even successful hits will only damage entrances or support systems rather than the centrifuges themselves. Civilians living in the surrounding region of central Iran would bear the brunt of any retaliatory strike or accident.
The relocation also sharpens a long-running strategic dilemma for the United States and its partners. Iran’s decision to move centrifuges underground is a bet that the more survivable its nuclear facilities become, the less credible a preventive strike will look, especially for an America already concerned about stretched munitions and air-defense stocks. A veteran military analyst recently argued that while Washington has ample offensive firepower, a full-scale campaign to destroy Iran’s nuclear complex would strain resources and leave key U.S. assets vulnerable, particularly given limited interceptor stockpiles.
Tehran’s calculus appears focused on regime survival above all. By dispersing and burying its most valuable nuclear equipment, Iran reduces the odds that a single surprise strike could cripple its program or shake public confidence in the leadership’s ability to defend the country. That makes diplomatic efforts to cap or roll back enrichment harder, because the cost of military alternatives rises with each new tunnel and hardened chamber.
The shift at Pickaxe Mountain is unfolding against a wider confrontation between Iran and the United States, including 10 consecutive nights of U.S. strikes on Iranian targets and Iranian claims of retaliatory attacks on U.S.-linked sites in the Gulf. In that context, Israel is reportedly trying to persuade Trump to restart full-scale strikes on Iran, while mediators pitch short-term ceasefires to reduce immediate tensions around the Strait of Hormuz. The contrast is stark: some actors are seeking a pause to protect shipping, others are pushing for a broader clash that could eventually bring buried sites like Pickaxe into the crosshairs.
Deep underground facilities change the nature of nuclear brinkmanship. What used to be a debate about whether to bomb a reactor or centrifuge hall now becomes a debate about whether to risk a large, multi-wave air campaign with uncertain chances of physically destroying the target. The more Iran moves its program into mountains, the more it forces its adversaries to choose between living with a resilient nuclear infrastructure or planning operations that could themselves reshape the region.
The key questions to watch are whether new satellite imagery or public disclosures shed more light on the scale and configuration of the Pickaxe tunnels, whether Washington updates its publicly stated red lines around Iran’s enrichment capabilities, and whether Israeli lobbying for more expansive strikes gains traction in U.S. political circles. A decision to develop or deploy more powerful bunker-busting weapons to the region—or a leak of detailed strike planning against Pickaxe—would be a clear signal that the underground shift has moved from intelligence file to active target list.
Sources
- OSINT