I wasn't sure what to expect from a movie that appeared to have no dialogue. I assumed that it would plod a little and that it might be harder to follow. This was not the case.
The movie built a wonderful sense of dread the entire time, and had a scene right in the beginning that set a very decidedly dark tone to the rest of it.
Don't let the lack of dialogue make you think it wouldn't sound great either, they really let loose with the sound design of the whole thing. Every sound that appeared in the movie was perfect. From the walking on the sand paths to the rustling of trees, everything had its place.
I feel it's going to be an experience best seen in a theater, so if you're going to watch a movie, make it this one.