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[INTERNATIONAL] · Iran, United States, Israel · 25 sources

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Pickaxe Mountain: Iran accelerates construction at underground nuclear site

Satellite imagery analysis by the Center for Strategic and International Studies (CSIS) reveals a significant surge in construction activity at Pickaxe Mountain, a fortified underground site near Iran's Natanz nuclear complex. Throughout 2026, visible work has included the reinforcement of tunnel access points, paving of internal road networks, and the removal of excavated material, suggesting a transition from excavation to internal construction and structural hardening.

While Israeli intelligence has suggested Iran may be relocating uranium centrifuges to the site, satellite data has not independently confirmed this movement. Analysts note that the facility does not currently show signs of active uranium enrichment. However, the site's deep granite location makes it a difficult target for conventional weapons, prompting the U.S. Department of Defense to explore next-generation penetrator bombs and conduct specialized underground testing at the White Sands Missile Range.

In a related diplomatic development, the IAEA Board of Governors passed a resolution to report Iran to the UN Security Council for breaching non-proliferation obligations. This move follows concerns regarding Iran's lack of cooperation with inspectors. President Donald Trump has renewed threats to strike the Pickaxe Mountain facility, warning Tehran not to engage in provocative activities.

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Center for Strategic and International Studies · Donald Trump · International Atomic Energy Agency · Iran · Natanz · Pentagon · Pickaxe Mountain · United States

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