The Jerusalem Post reports: “High-resolution satellite imagery of Iran’s largest and most crucial remaining nuclear facility shows a recent rush to protect it from potential American or Israeli aerial attack, according to the Institute for Science & International Security (ISIS).

Satellite imagery from February 10 appears to show that Tehran has taken advantage of delays in any such attack since the December 28 protests started to better defend the facility.

The facility in question is a large tunnel complex at Kolang-Gaz La Mountain, aka Pickaxe Mountain, a mountain near the series of Natanz nuclear facilities, which were the center of the Islamic Republic’s nuclear program until the Israel-Iran War of June 2025.

Most of the other Natanz facilities, including the existing centrifuges at the time, were destroyed in June 2025, but for reasons that have not been fully explained to date, this facility was not struck…”