Finally we know the planet "SPOILER"

And they clearly say "the big head moves"

The Giant Head is actually the Giant's head. The giant that has been hinted through many rumors & speculations is buried in that temple kinda like that beach sand gag. He is Prometheus and that's how the Gods punish him.

thats the only report saying that the head is moving ...its a bit strange that other reports have missed a so important thing .... so i dont know if really trust that .

[url=http://www.prometheus-movie.com/community/forums/topic/1534]Progenitor in head.......[/url] Maybe the moving head is not the giant head, but the 'possibly' decapitated Engineer head?&%|$.........

ive read it on multiple articles og journalists having seen it in London yesterday. there was also a flash of an Alien. (Different from the one we know) and confirmation of Weyland being there. and the last 7 minutes will explain Alien.

Don't know if this is on another post, but give it a shot: http://www.bleedingcool.com/2012/04/10/ive-just-seen-bunch-of-scenes-from-prometheus-want-tell-about-them/