[ChaseR]

"It is especially suited to urban warfare because the shock wave can penetrate underground bunkers and shelters."

And if that doesn't work....and to save our cities from further attack - I'd say it's time for our pal....Mr Neutron.
(Let's ask up our specialist, Poohbah. I'm sure he can give us some good insight!)
Poohbah, give us your take on what should be done if terrorist are hiding in mountains. Thanks.

[wonders]

Ref your #39: I was not saying these would be effective in this circumstance, I was merely answering Husker24's question in his post #8. I'd like to hear Poohbah's assessment, regardless, though :)

[Poohbah]

Sorry, I've been road-tripping from DC to San Diego--easier than getting a flight out of Dulles.

In short: The hard part is knowing where the caves are. I am now in the position of hoping that one of the more tinfoil applications alleged for HAARP is actually real--earth-penetrating tomography (EPT). EPT allegedly uses some exotic HF propagation factors to see underground. There is a patent out there--but it might not be worth the paper it's printed on (patents no longer require a working model to demonstrate the concept).

Once you have that data, there is a RANGE of nasty tricks you can play--FAE bombs, nukes, or drop a precisely timed series of JDAMs above the caves, and let resonance collapse the caves for you.