Читать книгу Sierra South. Backcountry Trips in California's Sierra Nevada онлайн

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Backpacking stores and some bookstores—especially those near popular hiking areas—carry at least the topographic maps for hikes in their areas as well as the software required to print your own. USGS topographic maps and US Forest Service maps are available at many ranger stations and at stations that issue wilderness permits.

USGS’s online store sells USGS maps at store.usgs.gov. Or contact the USGS Western Region office at 345 Middlefield Road, Menlo Park, CA 94025; 650-853-8300.

How to Use This Book

Terms This Book Uses

Destination/UTM Coordinates: This new edition provides UTM coordinates for GPS users. When the datum is from the field, we note this by including “(field)” after the datum. Otherwise, the datum is from mapping software. Because these data are all UTM data with the appropriate meters east (mE) and meters north (mN), we don’t repeat those labels but show UTM data in this form: 11S 395115 4034251.

Trip Type: This book classifies a trip as one of four types. An out-and-back trip goes out to a destination and returns the way it came. A loop trip goes out by one route and returns by another with relatively little or no retracing of the same trail. A semiloop trip has an out-and-back part and a loop part; the loop part may occur anywhere along the way, and if it’s in the middle, there are two out-and-back parts. A shuttle trip starts at one trailhead and ends at another; usually, the trailheads are too far apart for you to walk between them, so you will need to leave a car at the ending (take-out) trailhead, have someone pick you up there, or rely on California’s scanty and ill-organized public transportation to get back to your starting (put-in) trailhead.