A Fantasy Movie Made in the Late 80's/Early 90s
So this is a pretty obscure question, but it has been plaguing me for a number of years. There was this movie I used to watch on t.v. all the time when I was younger and I can't for the life of me remember what it's called. The problem is, the only distinguishing feature I can for certain remember about the film was that whenever the evil villain's name was said (some evil lord of some sort) it would thunder. Beyond that I have vague recollections of it being a live action film involving a boy journeying across this land, possibly meeting up with some character under a mountain, and culminating in a tower of sorts, but I can't be certain. I know this is somewhat vague but any direction as to the answer to this mystery would be appreciated.