Iran has denied the existence of a secret nuclear facility at a location known as Pickaxe Mountain. The denial comes after former US President Donald Trump warned on Tuesday that the United States would strike the site. Trump referred to the location as Pickaxe Mountain in English. Iranian officials said the allegations are false and that the site is not being used for nuclear activities. The threat and denial are part of longstanding tensions between the US and Iran over Iran's nuclear program. The US has previously accused Iran of seeking to develop nuclear weapons, a charge Iran denies, saying its nuclear work is for peaceful purposes. The exchange has escalated rhetoric between the two countries, but no further details have been provided by either side. The situation remains under observation by international bodies.