no problem - but you were right on one factor - they have really hardened that facility (N) and buried it under tons and tons of dirt.
Don’t recall many details on the old US faciltity - I’m sure its been modernized as well.
Anyway - back on your original point - I think the level and sophistication of our newest generations of penetrating bunker busters could still handle the task. I’ll leave it up to our military members to comment on that one