Overall this was fun, but not fun enough. I think it lacked overall suspense and tension because as you continue through the story you know there is only one way this book will end. I think what really takes away is the lack of use of the surroundings. They're on an ancient Mayan ruin and yet ... felt like it could have taken place on any random hill in any random part of the world. Not enough horror, more so body horror, I guess, but that's never been something that personally bothers me so I just felt like a lot of the time I was waiting for something real to happen. The characters were forgettable and the overall plot felt a little drawn out. 

I will say though, that the times I did read this before bed, my dreams felt very anxious. So props to this book for giving me some really intense dreams for a few nights, felt like I was making my own book every night. 

I'm currently watching the movie and I think that it made some interesting choices with the editing the story but it kind of makes me appreciate the book a little more.