U.S. President Donald Trump says the United States may soon strike Iran’s “Pickaxe Mountain,” a heavily fortified facility buried deep underground near Tehran’s Natanz uranium enrichment site. Multiple outlets report that Trump has publicly threatened to “take out” or hit the location, framing it as a likely target for military action amid heightened U.S.-Iran tensions.

The site is widely described as nuclear-related based on U.S. and Israeli assessments, including the belief that it is linked to uranium enrichment and may house advanced enrichment equipment such as centrifuges. Reuters-based reporting and other explainers say Pickaxe Mountain is close to Natanz, which has been damaged in past incidents.

Some analyses focus on the technical and operational challenges of attacking a deep underground target. Coverage notes that even advanced “bunker buster” ordnance would face uncertainty due to the geology and the difficulty of achieving effects deep underground. Other reporting also highlights unresolved questions about what is currently operational at the site and whether a strike would meet stated objectives.

Iran has not provided detailed public information about the facility, while it warns it would respond if the U.S. targets Iranian nuclear sites.