I seem to recall reading an article somewhere that Lewis Carroll, the author of Through the Looking Glass (or, Alice's Adventures In Wonderland) may have very well been high on drugs to concoct such an outlandish story…. and the imagery in the film (especially Alice drinking a potion to make herself smaller and larger) certainly represents that.
Although, this version of Alice In Wonderland is apparently a continuation of the story, not a remake of the origin story. Can't wait to see it!!!

That really looks awesome.

Also, I know wikipedia says otherwise, but I swear the story of Alice in Wonderland was really the story of someone's hallucinogenic trip. Mushrooms, opiates, something like that.