Need help with the name of a movie

[G]

OK, now, I saw this movie like 8 or so years ago, and I don't remember if it was new then either. SO

It was set in an artic like location, with snow storms and the like. There was a group of people in it, and a bunch of bunker type buildings. All I can barely remember is that there was a satanic book involved and someone from the group rigged up an RC car with a camera to sneak in some type of cave (I think) and see the "bad guy of the movie" doing like some sort of sacrifice to someone in the cave.

That's all I can remember, and if anyone knows what movie I'm talking about, then