Increased Construction Activity at Iran's Pickaxe Mountain Nuclear Site

Sep 9, 2026

58 min

Sep 9, 2026 23:30

Surge in construction at Iran’s deeply buried Pickaxe Mountain nuclear site seen

## Satellite Images Reveal Construction Surge

Recent satellite images have shown a notable increase in construction at Iran's Pickaxe Mountain, a fortified underground nuclear site near Natanz. This development has drawn attention from US and Israeli intelligence agencies.

## Analysis by CSIS

The Center for Strategic and International Studies (CSIS) analyzed six years of satellite data, noting that construction in 2026 is at its highest level. Activities include reinforcing underground access, expanding roads, and hardening entrances.

## Strategic Importance

Despite the construction, the site does not currently function as an enrichment facility. However, its strategic location and depth make it difficult to destroy with conventional weapons, even with advanced bunker-busters.

## IAEA Concerns

The International Atomic Energy Agency (IAEA) recently reported Iran to the UN Security Council for lack of cooperation. Iran's enriched uranium stockpile, estimated at 440.9 kilograms at 60% enrichment, poses a proliferation risk if further enriched.

## Diplomatic and Military Implications

The combination of restricted inspections and unverified uranium stocks increases uncertainty about Iran's nuclear intentions. This situation complicates diplomatic efforts and could heighten military tensions if the US perceives a shift in Iran's nuclear activities to more secure locations.

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