Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Some strong stuff

Joe Simpson starts out his book "Dark Shadows Falling" with an eerie and troubling tale of a mountaineer who was left out in the cold to die within a few hundred feet of his companions tents. Simpson uses this story to dramatize how far mainstream mountaineering has strayed from its original adventurer roots. The book's main drawback is Simpson's analysis of the 1996 Everest disaster which has been over reported and covered far more completely by those who were actually there. Simpson closes the book with an interestting but relatively uneventful recent climb of his own that seems to have little to do with the rest of the book.Overall, Simpson is an important figure in mountaineering and he does have plenty to say. Those with an interest in the subject should enjoy this book very much.