Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Scenic Master of the Rockies!

Dale Sanders has made extensive efforts documenting the remote, inaccessible areas of the Rio Grande; places one would otherwise only see from the locomotive. His photographic prowess is showcased in the quality of photos from every season, every major division of the railroad, in blazing heat, snow, and everything in between. Dozens of high-quality, colorful photos grace the pages of this masterpiece, with artfully-descritive captions beneath each one. Mr Sander's efforts concentrate on pre-Union Pacific takeover, and only have a small scattering of Southern Pacific shots on the volume, leaving the large majority of the book as pure D&RGW; study.I would HIGHLY recommend this book to any Rio Grande fanatic, and it's a mandatory personal library addition to anyone wishing to explore the inner reaches of the Rio Grande system beyond the grade crossings.