Instruct: Classify a given review as either positive or negative.
Query: An inexpensive and useful trail map for Yosemite

This is a regular topographic map to Yosemite with the High Sierra Loop and other main trails marked up. On the reverse is a description of the High Sierra Loop, plus a dozen shorter trails all with brief descriptions and elevation profiles, and some natural history information.This is pretty minimalist, but then again for $2.50 it doesn't need to be more. Provided you can read a map this has all you need to spend several days on the trail, for the weight of a few grams.