And what about the dragons, hiding their treasures in the caves = pockets of the earth? Did they substitute riches for fertility? They did, after all, die out!
I would like to add the following discussion link for your perusal:
What's With this Always Going Underground
Sharku plainly exposes the symbolism as sexual, though he tries to disguise his explanation as irony...
Furthermore I highly recommend that classic discussion of the ring's female symbolism, my all-time favorite thread:
The One Ring?
It is nice to know that those discussion days have not ended irrevocably!
PS edit: Is my usage of the word 'disguise' in my above comment symbolic as well? Dis-guise = taking the guise of Dís, the only female dwarf we know by name. There has to be some underlying meaning there!!
[ September 17, 2002: Message edited by: Estelyn Telcontar ]