TEHRAN/WASHINGTON, July 21 (Reuters) – Deep beneath western Iran‘s rugged terrain, a fortified underground complex known as Pickaxe Mountain now houses thousands of advanced nuclear centrifuges. Israeli intelligence assessed the transfer accelerated after 2024 assassinations of nuclear scientists and Stuxnet-style cyberattacks, according to a Wall Street Journal exclusive.
The move reshapes US and Israeli military calculus. Pickaxe Mountain’s tunnel network, originally a mining operation, was repurposed by the Iranian military. It features reinforced concrete and rock barriers designed to withstand bunker buster bombs like the GBU-57 MOP and air-launched cruise missiles.
Trump warned July 21: “We’ll hit nuclear sites.” The warning followed drones shot down near the US consulate in Erbil, Iraq. Iran’s retaliation threats included closing the Strait of Hormuz, attacking US bases, and mobilizing proxies in Yemen, Syria, and Lebanon.
Pickaxe Mountain is now considered the crown jewel of Iran’s nuclear program, surpassing Fordow and Natanz. Its estimated depth, tunnel length, and multiple chambers complicate single-strike kill scenarios. Military analysts debate conventional bunker busters, thermobaric weapons, and potential US nuclear penetrators (B61-11).
Iran learned from past attacks on Fordow and Natanz. Defensive measures include anti-aircraft batteries, electronic warfare systems, and decoy tunnels. The site’s survivability delays detection and preemptive strikes, impacting Iran’s nuclear breakout timeline.
The July 21 Hormuz oil crisis sent global energy prices soaring. Russia and China oppose military action; EU diplomatic efforts continue. IAEA inspections remain stymied. Pickaxe Mountain’s fate determines whether Iran achieves a nuclear weapon or is stopped by force.
| Facility | Location | Depth (meters) | Tunnel Length (km) | Centrifuge Type |
|---|---|---|---|---|
| Pickaxe Mountain | Western Iran | Estimated 80-100 | Estimated 15-20 | IR-6, IR-9 |
| Fordow | Near Qom | 90 | 2 | IR-1, IR-2m |
| Natanz | Central Iran | Surface | N/A | IR-1, IR-6 |
💡 Frequently Asked Questions (FAQ)
- Q: What is Pickaxe Mountain and why is it significant for Iran’s nuclear program?
- A: Pickaxe Mountain is a fortified underground complex in western Iran that houses thousands of advanced nuclear centrifuges, surpassing facilities like Fordow and Natanz, making it a key asset shielded from attacks.
- Q: How does Pickaxe Mountain protect against US and Israeli strikes?
- A: The site features reinforced concrete and rock barriers, anti-aircraft batteries, electronic warfare systems, and decoy tunnels, designed to withstand bunker buster bombs and complicate single-strike scenarios.
- Q: What recent events have heightened tensions around Pickaxe Mountain?
- A: Israeli intelligence assessed that centrifuge transfers accelerated after 2024 assassinations of nuclear scientists and cyberattacks, with Trump warning on July 21 of potential strikes on nuclear sites.
- Q: What military options are being considered to target Pickaxe Mountain?
- A: Debates include conventional bunker busters like the GBU-57 MOP, thermobaric weapons, and potential US nuclear penetrators such as the B61-11, though its depth and tunnel length complicate kill scenarios.
Extended Reading
This report draws on exclusive intelligence briefings, Fox News live updates from July 21, 2026, and the Wall Street Journal’s exclusive assessment of Israeli intelligence. The New York Times provided geographic and geological context for Pickaxe Mountain. HA Viewpoint’s project analysis on underground nuclear facilities informed the engineering breakdown.