Well, in the book i imagine the dragon hold as a vast open area of rock, like a cave with the top removed. Then i imagine that if i look up i can see about 3 feet above my head and above for about 100 feet the walls pockmarked with caves of every size, from a cave barely big enough to hold a child (elf, hint hint wink wink) to a cave big enough to fit several full grown dragons.
As for the movie, i think that the dragon hold is not depicted cleary, but correct me if i am wrong because it is almost my bedtime and i am too lazy :-) to go and pop eragon into the DVD player and watch it.
I LOVE DRAGONS!
I believe it was the eye of a dragon, it's on one of the very first pages in every book.
Recently there was a teaser released by Christopher Paulini that it will be an emerald green dragon. There are several names floating around but you can get more info athttp://inheritance.wikia.com/wiki/Book_4.Hope i helped.
it looks like a dragon
It would probably look like some kind of dragon
Like a mushroom
A dragon fire shield kinda looks like a square shield but it is orange and has a dragon on it.
hihun
A dragon
I think you breed volcano and vampire
a dragon
no it might look like it but they are not
a mu stash