Fuel Air bombs and underground facilities.
True Justin, but with multiple openings and depth it is much less effective.
Bunker busters (penetrators) are effective only so deep for the same reason.
(They dropped a few F/A munitions in Iraq during the gulf war. Some French pilots thought they were using Nukes, Thats how powerful they can be. Saw the crater of one in Nam, one bigga** hole in the ground. The concussion was fatal for a thousand yards.)