Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Over the Edge: Death in the Grand Canyon

The copy I read is the "twenty-first printing, fifteenth revision".Among books of this topic and kind, I've reviewed one other: L. H. Whittlesey's (1995)Death in Yellowstone: Accidents and Foolhardiness in the First National Park. Over the Edge (2001), like Death in Yellowstone, is clear evidence that nature is not benign and that, even within the areas of nature set aside as preserves for outdoor recreation, you are not protected from nature's uncontrollable wildness or from the outcome of your own behavior, mistakes, misjudgments, and disregard.Deaths in the Grand Canyon occur mainly through high temperature and dehydration sometimes combined with getting lost, falls, and various cirmcumstances of drowning.On the subject of making nature a safe environment for outdoor recreation, see Joseph Sax's (1980)Mountains Without Handrails: Reflections on the National Parks.