What is Pickaxe Mountain, Iran’s underground nuclear facility Trump is threatening to attack?

The Guardian reports on Pickaxe Mountain, a fortified underground Iranian nuclear facility that President Trump has threatened to strike. The site is located near the Natanz nuclear complex and is believed to be buried 100 meters deep.
Why it matters
The potential military targeting of a major nuclear facility poses significant risks of regional escalation and nuclear proliferation.
A satellite image of Natanz nuclear facility and Pickaxe Mountain, near Natanz in Iran. A satellite image of Natanz nuclear facility and Pickaxe Mountain, near Natanz in Iran. Iran Explainer What is Pickaxe Mountain, Iran’s underground nuclear facility Trump is threatening to attack? Little is known about the complex near the Natanz nuclear facility, but it is estimated it is buried almost 100 metres inside a mountain
Prefer the Guardian on Google With the conflict between the US and Iran facing its most sustained outbreak of violence since a ceasefire was agreed in April, Donald Trump has returned to threatening Iranian nuclear sites.
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