PICKAXE MOUNTAIN NEAR NATANZ NUCLEAR FACILITY, IRAN -- NOVEMBER 14, 2025: 12 -- Vantor satellite image shows tunnel construction activities and a large spoil pile near the Natanz nuclear complex at Pickaxe Mountain. Please use: Satellite image (c) 2026 Vantor.Maxar | Maxar | Getty ImagesU.S. President Donald Trump has threatened to bomb an Iranian underground nuclear facility in the latest escalation of the war between the two countries. U.S. Central Command has bombed Iranian targets for 11 straight nights, including military operations centers, drone storage facilities, and military logistics infrastructure as it seeks to weaken the country's ability to control commercial shipping in the Strait of Hormuz. U.S. and Iran had signed an interim memorandum of understanding on June 17 that halted military operations, called for the reopening of Hormuz and established a 60-day window for negotiating a permanent agreement, including terms covering Iran's nuclear program. But the document left the future management of the Strait of Hormuz unresolved.Trump's comments on Pickaxe Mountain have put renewed focus on one of Iran's most secure and protected facilities. Here's what we know.What has Trump said about Pickaxe Mountain?Speaking from Washington on Tuesday, the president said that the U.S. military will soon be targeting Pickaxe Mountain — a key underground site next to an Iranian nuclear facility. "We'll be hitting that area very probably pretty soon, and there's not a thing they can do about it. Normally I wouldn't say that; if I thought they could do something about it I would never say that, but we'll be hitting that area pretty soon, and very heavily," Trump told reporters in the White House.Such an attack would be considered "an explosion of war in the region," Iran's Khatam Al-Anbiya military command said in comments reported by the BBC from state-run broadcaster IRIB. They also threatened strikes on "all the interests of America, the allies and supporters."Located south of Iran's Natanz enrichment plant, Pickaxe Mountain, or Kuh-e Kolang Gaz La as it is known in Iran, began construction in 2020. At the time, Iran said that the underground facility would replace a centrifuge plant at Natanz that had been destroyed, according to the Institute for Science and International Security.Read more U.S.-Iran war newsTehran’s Hormuz threat risks global fallout, Rubio warns as U.S. strikes Iran for 11th straight nightIran says it attacked Amazon infrastructure in BahrainU.S. strikes Iran and Houthis threaten Saudi Arabia shipping as mediators push 10-day ceasefireOil exports through the Strait of Hormuz might not return to levels seen before the Iran warStrait of Hormuz shutdown: A visual guide to the world's most critical oil chokepointOil markets are betting on a swift end to the Iran war. Investors may regret itThe Middle East war is testing the Gulf’s ambitions to become an AI hubAnalysis: An end to the Iran war may be just the beginning of a new era of U.S. inequalityWhy the confusion around the Iran situation could get worse. How to profit anywayStrait of Hormuz: Ships attacked as Trump extends Iran ceasefireTrump tells CNBC he expects U.S. to make 'great deal' with IranMore from CNBC Politics — CNBC's Lim Hui Jie helped contribute to this report.