What to know about Iran's Pickaxe Mountain, home to an underground nuclear site

The site, known as Kuh-e Kolang Gaz La, or 'Pickaxe Mountain,' lies on the south side of Iran's Natanz nuclear enrichment site, which was bombed by the United States during Operation Midnight Hammer in 2025's 12-day war between Iran and Israel. But Pickaxe Mountain has remained untouched as Iran continues to dig at the site.