This is the damage a Grand Slam bomb left on a submarine shelter with a roof made from a couple meters (5-6m?) of reinforced concrete.
The bomb has almost twice the explosive power of a MOP, but weights 2000kg less, or so; meaning they are comparable enough.
Did this bomb destroy the bunker? No. It didn't even fully destroy one fucking pen. Instead it made a hole in the roof.
So yeah, that shit's not gonna destroy Iran's underground facility.