The old fashiond way, some poor schmuck has to crawl in there and look. Just like tunnel rats did in Nam.
Although now he would have a mini cam for peeking around corners. And a few other high tech goodies.

Ground forces are going to have to go in, as deep and concealed as those caves, we could bomb for a hundred years and not get them all. If we seriously want to take out the bad actors ground forces muct be used.

And this is where the sh*t hits the fan. Given the character and culture of the Afghani people they will resist. Their view of this will be, we are just like the Soviets, an invader.
:est we forget these people are uneducated and have been propagandised endlessly for decades now.
Any western face in Afghanistan with a uniform on is an enemy to most Afghani's.
It isn't what's true, it's what they believe that counts.