Iran Enhances Underground Nuclear Facility Amid Rising Tensions

Sat Feb 14 2026 01:15:23 GMT+0200 (Eastern European Standard Time)

Recent satellite imagery shows Iran bolstering its underground complex near a nuclear site, heightening fears over its nuclear ambitions as diplomatic relations with the U.S. remain strained.

Analysis of new satellite images reveals that Iran is fortifying an underground complex close to its nuclear facilities. Enhanced construction efforts, particularly at Mount Kolang Gaz La, come during escalating tensions and ongoing negotiations regarding Iran's nuclear program. Experts speculate whether the enhanced facility aims to protect uranium enrichment activities or other critical equipment. The geopolitical landscape remains fraught with implications for nuclear arms control in the region.

Iran has been fortifying an underground complex near one of its nuclear facilities, according to analysis of new satellite images. This activity comes amidst heightened tensions as talks between Iranian and U.S. officials continue, with President Donald Trump threatening fresh military action against Iran if it does not agree to a new deal on its nuclear program.

The photos, first analyzed by the Institute for Science and International Security (ISIS), reveal strengthening efforts at the Mount Kolang Gaz La site—commonly referred to as Pickaxe Mountain. Experts suggest this facility may be intended to safeguard Iran's uranium enrichment activities or key infrastructure, but its precise purpose is still under scrutiny.

Despite Iran's claims that its nuclear program is peaceful, concerns persist about its potential military dimensions. Trump previously asserted that Iran was rapidly approaching the ability to develop a nuclear weapon, further complicating diplomatic efforts. Notably, while a U.S. and Israeli airstrike in June 2025 targeted various nuclear-related sites, the Mount Kolang Gaz La facility remained untouched.

Recent satellite images indicate visible structural alterations, including new concrete reinforcement around the tunnel entrances at Pickaxe Mountain. Heavy construction machinery has been spotted at the site, pointing towards ongoing developments, which experts believe are aimed at fortifying against potential military strikes. Structures at the nearby Natanz nuclear site have also undergone repairs and reinforcement in recent weeks, demonstrating a broader trend of Iran enhancing its nuclear infrastructure.

In light of these developments, observers like Rafael Grossi of the International Atomic Energy Agency stress the urgent need for renewed negotiations to establish a comprehensive nuclear deal, especially considering that a significant amount of highly enriched uranium remains concealed within underground facilities.