For those of you interested in the art and production design of Avatar (and the thoughts behind them), a site just put up some very cool pages:
The Complete History of Pandora, According to Avatar's Designers
The four sub-articles have lots of cool information (in particular
this one)... They also have some very cool (& large)
pre-production artwork, here is a small sample:
1.
The mile-long starship (ISV Venture Star) -
Note that this is actually a 'pull' design, the two engines are up front, so this view is from the back looking forward
2.
Jake & Neytiri viewing the Pandora landscape
3.
Quaritch escapes from the crashed Dragon - Note that this scene is different from what ended up in the film, here the Dragon crashed in a lake