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Satellite images show Iran expands underground Pickaxe Mountain site near Natanz

Natanz nuclear facilities (Shahid Ahmadi Roshan Nuclear Facilities), near Ahmadabad, Iran after airstrikes on June 15, 2025. (Photo by Handout/Satellite image ©2025 Maxar Technologies/AFP)
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Natanz nuclear facilities (Shahid Ahmadi Roshan Nuclear Facilities), near Ahmadabad, Iran after airstrikes on June 15, 2025. (Photo by Handout/Satellite image ©2025 Maxar Technologies/AFP)
September 26, 2025 05:18 PM GMT+03:00

Satellite imagery indicates Iran is continuing construction at a mysterious underground facility known as Pickaxe Mountain, located south of the Natanz nuclear complex, in the months following U.S. and Israeli airstrikes in June Washington Post reports.

Analysts say the tunnels may reach 260 to 330 feet deep, possibly intended for covert uranium enrichment or secure storage of near-weapons-grade uranium. International inspectors have never visited the site, and Tehran has rebuffed inquiries from the International Atomic Energy Agency (IAEA).

Satellite images show repairs of the sites destroyed or damaged in the attacks. (Source: Maxar via WP)
Satellite images show repairs of the sites destroyed or damaged in the attacks. (Source: Maxar via WP)

Recent imagery shows continued activity, including:

  • Reinforcement of tunnel entrances
  • Expansion of a security perimeter
  • Increased spoil piles from excavation
  • Deployment of heavy construction equipment

Experts say the activity likely aims to harden the site against future airstrikes rather than indicate a sudden rush to produce nuclear weapons. U.S. and Israeli strikes in June damaged Natanz, Fordow, and Isfahan facilities, rendering Iran’s 22,000 centrifuges inoperable.

“The fact they’re continuing to build this is significant,” said Sarah Burkhard, of the Institute for Science and International Security. Analysts note that Iran appears cautious in rebuilding its nuclear capabilities, prioritizing secrecy over speed.

Satellite images show the walls destroyed in the attacks being rebuilt. First image June 30, second image Sept. 18. (Source: Maxar via WP)
Satellite images show the walls destroyed in the attacks being rebuilt. First image June 30, second image Sept. 18. (Source: Maxar via WP)

A White House official said President Donald Trump has vowed to prevent Iran from acquiring nuclear weapons, according to WP. The CIA declined to comment, and the location of Iran’s 60-percent-enriched uranium stockpile remains unclear.

Iranian officials, including Ali Larijani of the Supreme National Security Council, said the sites have not been abandoned, leaving open the possibility of continued operations. Analysts caution that Iran may continue underground work without rushing, maintaining the potential to reconstitute its nuclear program if it chooses.

September 26, 2025 05:18 PM GMT+03:00
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