Dangerous yes, but only bloody for the Bin Laden crowd.
I can think of no situation that could give me more pleasure than to find my enemy in a cave. The entrances can be identified easily. Air vents and generator units can be found in the cold winter air by the vapor plumes that they will emit. Any heating system will show up as melted snow on the surface and as heat tracks on infrared satellite photographs. The cave entrances will be like big red bloches on those same photos.
A few well placed missles will take out any above ground defences and a few sachel charges will close all the openings. Then on to the next complex.
I do not understand why the mind set is that we have to go into each complex and poke every raghead in the eye with a sharp stick. If 1000 of them are in a cave, you shut them in the cave and then go on to the next cave. A small company of Marines could keep 1000 armed camel jockies bottled up in a cave for years. They will run out of food, water and air eventualy.