What is considered “High Adventure”?

As I thought about the signs of a dysfunctional unit, it occurred to me that others might not know what a boy scout “high adventure” activity consisted of.  What high adventure means to one may not be what high adventure means to another.  It would be like me thinking about camping as a backpack with a tent while my wife is thinking hotel with a spa.  Two different activities with two very different purposes, right?  Ok, I might be exaggerating here a little…kinda. Well, not really. The gap can’t be that wide in scouting!

This is what I would consider High Adventure and not High Adventure activities: 

Are there any others you would add in either category?