So, they just sent in a team with no protective gear or vehicles into an unknown anomaly... Never mind, lets move on. The movie is just slow and uninteresting. Characters try to explain what's happening through dialogue as if we can't get it. Portman's performance is that of a sidelined muppet. The decisions that the super professional team makes throughout the movie are the exact opposite of what a rational person would consider. The ending simply explains why a sequel should never be made.