I'm currently running it and every time I read up on a section before the players play through it, I'm left bewildered at how this made it to publication. The PC's are currently going towards a certain secret location where all the answers will be given to them. A location so remote that only a handful of giants and three ancient dragons know of its existence. Hidden in a deep and inhospitable mountain range.
And yet, just by pure coincidence, a bunch of barbarians happen to be there when the PC's arrive. Why are they there? Err... because? Loots... n'stuff? Someone went in there by themselves and now the barbarian tribe are trying to get them back, even though, "...and his tribe strike out from this cavern only occasionally to defend their territory...", a cavern that is at least six days hard travel across harsh terrain.
Why did this lost tribe member go there? Umm... reasons?
This is the entire module. Reasons and because. Sorry, I'm venting, just frustrated that this campaign is more work than it would've been had I just made it all up myself.