Oh, I see. Sorry, i mistaken your words as a try to making points, which as I see aren't valid. Sorry.
I think preds could easily expect humans to find out about the pyramid. The heat signature it emitted could be easily percieved by satellites (and a lot of them were cruising above antarctica, according to Weyland's anxiety). Predators, with their ship and advanced technology (whic enables them to, for instance, create a rough 3d image about a building 600 feet under the ice -was it 600 btw o_O?-) could easily analyse what those satellites were capable of. Also they knew about the curiosity of mankind, since they have been taught them (*facepalms*). So, all thay needed is to estimate the time when the next satellite observes Bouvetoya island 8and which is approximately near to october the 10th). I thought like that, when it was said in the movie, humans are needed, and were lured here. Which by the way, even though it can be explained is totaly BS.
No humans= no hunt, as made clear in that movie (whixh is again isn't right). So there can be no case of they go there and no humans. The opposite, they go there, because there are humans. It's not a coincidence with the whaling station I think. the coincidence is, that in 100 years humand developed technology to crate satellites. Without that, no trap.
And there are more pyramids on other planets also, as I guessed. So if Earth is not okay, then another one will do.
