I watched this film mainly because I liked the Descent and thought that this movie would be something like that. The whole plot is shallow as hell. There could have been some sort of depth between the characters like Josh and Frank and maybe that guy and his girlfriend. The characters were all two dimensional. The writing was probably the worst part of the film. It makes the characters do stupid things. I've seen a lot of movies with stupid characters, and these characters are really, really dumb. The girl for example refused to wear a wetsuit when going diving because she's an idiot and doesn't know the definition of hypothermia. All the characters as a whole were dumb when they decided to continue their little expedition when they knew a huge storm was coming and could possibly flood the caves thereby killing everyone. Why are they so stupid? It's like one irrational decision after another. The characters can't think for themselves. *SPOILERS* Ohhh and what was up with everyone drowning each other? The one foreign guy breaks every bone in his body (or so they assume) so they drown the dude! The movie makes it seem like drowning is such a peaceful way to go. It's really not. I mean not that I would know, but I read somewhere that drowning is actually really painful. It doesn't seem peaceful at all, but the movie portrays it as a soothing and calm way to go. Then when the dad gets stabbed in the back, he makes his son drown him to end his suffering...whaaaaaaaat?! That seems so traumatic for a son to kill his own father. What the hell is this? If I was stabbed in the back, I'd much rather bleed to death than to be forcefully held under water by a family member. What is with all the mindless euthanasia in this film? Was there meaning behind it or was it just poor writing? I also liked how like an hour after the boy, Josh, kills his father, he makes it to the outside world and survives. I wonder if he hadn't killed his father, if Josh could've gotten help and gone back to save him. Hmmm....I guess we'll never know. Stupid people. The other problem I had with the writing was the fact that everything in the beginning seemed so incredibly happy and fun. The entire atmosphere was just filled with joy. It was so fake and forced. When everything starts out so happy, the audience knows it can only get worse and it does. The movie is not at all predictable, but the way things happen just seem forced. It doesn't flow together as nicely as it could have. The movie just wasn't executed as well as it should've. Some of the scenes in the movie showing the huge underwater caves were really, really fake. I was surprised that it looked so terrible. I could tell exactly where the green screen started and ended. It was pretty pathetic. Don't get me wrong, I mean some parts with the water falls and cave tunnels and crap were really pretty and all, but the inconsistency annoyed me. In one scene, you'd see a beautiful underwater cave feature and in the next you'd see a huge almost clay-animated bunch of rock formations in a cave that looked really, really fake. It was rather weird to be honest. The acting part of the film was just okay. Considering all the actors were given such flat characters to portray on screen, they did a pretty good job. It's hard to play a character that literally has zero personality traits. The writing and dialogue were the main issue in this movie that made it fail. If the writer had added a little depth, a bit of an understory and given the actors the chance to play realistic people then I think this movie would've been a lot better. I didn't absolutely hate it, but it was a little boring to watch. When all the characters are obnoxious as fuck and as dumb as dirt...I can't really enjoy the film. It was just okay.