"Pyramids"

http://www.prometheus-movie.com/community/forums/topic/3261

I do believe there's domes all over the place on that planet, at least within the valley they land in. It appears also there are Nazca-type lines directing them to the first temple. Help me out here, am I wrong, guys? What is in, or even if we ever see, the other domes is anyone's guess.

I actually think they have a machine that creates that path for the vehicles.

What is weird is, that world lacks any kind of orbital defense ring (or something like it). It seems defenseless. If Prometheus was a military ship, it could destroy the entire place "from orbit". What again makes me think that this world isn´t a "base". Of course, the "defenseless" appearence would be in accordance with that one should expect of...a trap. However, I really think the story will be very different from these options.