Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not nearly enough detail on basic information

This book is full of intersting tidbits on the history of the canyon (who was the first person to run the canyon rim-rim, geology, ecology, people history and so forth) - this makes up well over half of the book. The rest of the book skims the trails offering less information than can easily be found on the net. I am planning a trip to GC and am dissapointed that I will clearly be buying another book to give basics like for starters - a diagram of the trails.