That was the strangest thing I've ever read. I can't call it abstract, because everything within it was described pretty thoroughly and in concrete terms. But it was just so completely bizarre. 
 I like that. It reminded me of the really creepy parts of Stranger Things at first, but then it got weirder and weirder. I like reading about stuff I've never even thought of before--that and the feeling of wonderment are what I love so much about sci-fi and fantasy. I only wish this book had had something more for me to relate or connect to. It was so totally out-there that it was almost devoid of meaning for me. 
 I loved that the expedition comprised four female scientists. And yet, it wasn't about gender in any way. The fact that they were women is utterly beside the point, so there's no reason a male reader would understand or enjoy this book any less than a female reader. 
 I'm not sure if I'll go on with this series. I am really excited for the movie adaptation, though. It'll be interesting to see how the hell they turn this story into a purely audio/visual experience.