Bernie,
There is a quote from the scene - "Earth and water. You'll find plenty of both down there.". Sounds like the expected contents of a well to me. And we are never shown the bottom. Did you even watch the movie??? I think somebody needs to pay better attention to the details before making statements regarding those details.
I'm sure you will not take my word for it, so maybe this will help inform you a bit (well, I doubt it will help, but it is a fun scene anyway).
Oh, and the quote is at the 2 minute mark. Enjoy...
And I surrender nothing to anyone...why else would I continue to argue with you over trivial things?
Steve