Trump warns Tehran over ‘Pickaxe Mountain’ activity as Gulf ship attacks escalate

U.S. President Donald Trump has publicly warned Tehran that the United States could strike an underground complex known as “Pickaxe Mountain,” and the announcement arrives alongside reports of U.S.-Iran exchange attacks on vessels near the Strait of Hormuz. Analysts and satellite-image researchers say Pickaxe Mountain — a subterranean site south of the Natans nuclear facility — has shown increased activity, but what lies inside remains unverified by international inspectors.

What Trump said and what is alleged about Pickaxe Mountain

In recent remarks reported by multiple outlets, President Trump described the possibility of a “large” strike against Pickaxe Mountain and said action could come “relatively soon.” reporting and satellite-image analysis identify Pickaxe Mountain as a heavily fortified, tunnelled complex roughly 1.5 kilometres south of Natans in Iran’s Isfahan province. Open-source imagery and expert assessments cited in media accounts indicate new tunnel entrances, access roads, and security works at the site since about 2020.

Independent verification of activities inside the facility is lacking. The International Atomic Energy Agency (IAEA) has not been given access that would conclusively confirm whether the site houses centrifuge assembly, enriched uranium, or other components of Iran’s nuclear programme, and the IAEA has said it cannot determine what is inside without inspections. reporting and analyses quoted by outlets estimate parts of the complex may lie tens of metres under rock — in some expert assessments as deep as 80–100 metres — which would complicate any air-delivered strike.

Military options and technical limits

Commentators and defence analysts cited in coverage discuss the limits of bunker‑busting munitions. The GBU‑57 Massive Ordnance Penetrator, a heavy bunker‑breaching bomb in U.S. inventory, is frequently mentioned as one option. Open reporting notes such weapons have finite penetration capability: some analysts estimate practical penetration depths on the order of a few tens of metres of rock, and publications reviewing satellite imagery and expert commentary have highlighted uncertainty about whether even the most powerful conventional penetrators could neutralise deeply buried facilities.

Analyses also point to operational constraints: the number of heavy penetrators available is limited, targeting a complex with unknown tunnel geometry risks limited effectiveness, and aerial strikes against deep, fortified underground networks present unique technical and intelligence challenges. Some analysts argue that a combined approach — strikes on tunnel entrances and supporting infrastructure, or targeting forces attempting to access collapsed tunnels — could delay operations inside the facility rather than fully destroy them.

Maritime exchanges near the Strait of Hormuz

The president’s comments occurred amid reporting of reciprocal attacks on commercial and naval vessels near the Strait of Hormuz. Media accounts indicate a series of U.S.-Iran exchanges involving attacks on ships in waters critical to Gulf trade and energy shipments. These maritime incidents have prompted concern from regional governments and international observers about the security of shipping routes that carry a significant share of global oil and gas exports.

Reports differ on the exact sequence, weapons used, and damage assessments in individual incidents; outlets summarising developments noted U.S. forces fired defensive interceptors during Iranian strikes and that several ships reported damage or disruptions. Independent confirmation of the details of each reported exchange is limited in the public record cited by the reporting.

Regional and economic implications

Any escalation around Pickaxe Mountain or sustained maritime attacks near Hormuz carries direct implications for Gulf states and the United Arab Emirates, where maritime traffic and energy-related trade are pivotal. Disruption or perceived risk in the Strait of Hormuz can raise shipping insurance costs, divert tankers to longer routes, and apply upward pressure to energy prices. Gulf ports, logistics providers and commodity traders monitor such developments closely because even short-lived spikes in risk can have immediate operational and cost effects.

Politically, a U.S. strike on an under‑mountain complex would carry diplomatic consequences across the Middle East. Reporting highlights that the strategic depth and secrecy of the site complicate both military planning and international diplomacy. Regional leaders weighing responses would consider potential retaliatory steps, risks to foreign nationals and assets, and the broader stability of energy markets.

What remains uncertain and unresolved

• IAEA access and verification: The agency has not confirmed what is inside Pickaxe Mountain; its director has said inspections are required to determine the site’s contents.
• Depth and layout: Open-source imagery suggests heavy fortification and new tunnel works, but the precise depth and tunnel geometry remain publicly unverified, limiting confidence in strike-effectiveness estimates.
• Ship attack details: Media reports describe exchanges of attacks on vessels near Hormuz, but accounts vary on exact timing, weapon types and damage. Independent confirmation of every claim is not available in the sources reviewed.
• U.S. military inventories and choices: Reporting notes limits to the number of the most powerful bunker‑busting munitions and technical constraints; publicly available sources do not provide an authoritative inventory or final operational plan.

Timeline of publicly reported developments

1. 2020: Satellite imagery and reporting show construction activity and new tunnels at the mountain after a major fire damaged nearby Natans facilities.
2. 2021–2024: Analysts and imagery firms continue to document tunnel entrances, access works and security upgrades; IAEA inspectors have not been granted unrestricted access to the complex.
3. June 2025 (reported context): U.S. air campaign against Iranian nuclear-related sites included use of heavy bunker‑busting munitions on some targets; subsequent analysts noted increased activity at Pickaxe Mountain.
4. Mid‑2026: President Trump publicly warned Tehran of a potential strike on Pickaxe Mountain while media reported rising attacks and counter‑attacks on ships near the Strait of Hormuz.

Practical takeaways for the UAE and regional actors

For businesses, ship operators and supply‑chain managers in the UAE and across the Gulf, the immediate practical steps are risk mitigation: review routing and insurance arrangements, monitor naval advisories and Lloyd’s warnings, and coordinate with port and logistics partners about contingency plans. For policymakers, maintaining diplomatic channels, pressing for independent inspections where possible, and de‑escalatory confidence measures at sea could reduce the chances of miscalculation.

Conclusion

Public reporting shows President Trump has explicitly named Pickaxe Mountain as a potential target and that incidents at sea near the Strait of Hormuz have increased tensions between the United States and Iran. What remains unresolved is the content and strategic value of the underground complex and the exact course of the maritime exchanges — points the IAEA, satellite analysts and defence experts have repeatedly said require further verification. The situation poses direct security and economic risks for Gulf states, including the UAE, and will be monitored closely by regional governments, shipping companies and international institutions.