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Title: A good guide, but needs a few more data points
Review: We've used this guide for the entire Northern California section, and haven't gotten lost. The only problem is that some of the jeep roads mentioned in the guide are now invisible, at least to our aging eyes, and also, some of the data points indicate zero elevation change, when there might be a 1000 ft up or down between the points. Add a few more data points, please.
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