Fordow nuclear site: What we know about Iran’s facility hardened against bunker busting bombs

CNN
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Five tunnels burrowing into a group of mountains, a large support structure and a wide security perimeter: That’s all you can see of Iran’s mysterious Fordow Fuel Enrichment Plant from recent satellite imagery.

The secretive, heavily guarded complex built close to the holy city of Qom has been fueling speculation about its true nature and size since it was first made public in 2009.

A chunk of what we do know about it comes from a trove of Iranian documents stolen years ago by Israeli intelligence.

Its main halls are an estimated 80 to 90 meters (around 262 to 295 feet) beneath the ground – safe from any aerial bomb known to be…