By far the worst of Emmerichs flicks yet, I'm afraid. To call "10.000 B.C." 'mindless' would be a grave understatement, but that was to be expected, given the previews.
What's really surprising though, is the utter lack of spectacle. Sure, the mammoths look utterly gorgeous, this is some of the finest effects work I've ever seen (alas, this doesn't really hold true for the rest of the creatures), but what little there is was already shown in the trailers and the extended clip of the hunt. What's missing adds up to a few minutes at best - including the (utterly lame) attack by the birds and the scenes with the sabertooth.
Possible mild spoilers ahead....
Actually, scrap the sabertooth. Apart from some quick shots of the beast struggling in water and running away, what has been shown in the trailer is all there is. Honestly.
Although visually appealing, the showdown is anything but satisfying (again, most of it is in the previews), part of which is due to the fact that Emmerich not only enters "Stargate"-territory (and almost goes the whole distance, the only thing missing is actually showing the ring) but in the last minute even resorts to magic.
So, even taking into account the fact that fare like this must not be approached with anything like "logic" or even "plausibility" in mind (which worked fine for "Independence Day", which I still enjoy), this movie is simply utterly boring. There is nothing to fill the huge gap between the opening hunt and the less-than-rousing showdown to merit a viewing. Not even on Blu-ray I'm afraid.