What's with all this "I thought it would be a jungle, blah blah..." Seriously, does our planet have just one terrain? The idea of a "desert planet" or a "jungle planet" is pretty ridiculous, actually. Wouldn't a habitable planet be more likely to have a variety of habitats, just like Earth? So, they land in a rocky area. That doesn't mean there's no jungle on the horizon. I mean, the film did shoot for several days in Hawaii.