Читать книгу Day & Section Hikes Pacific Crest Trail: Northern California онлайн

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Crossing the outflow of an unnamed lake in Yosemite’s high country on the way from Ireland Lake (Hike 2) to Vogelsang High Sierra Camp

ELEVATION PROFILES

Corresponding directly to the trail map, each hike contains an elevation profile that enables you to easily visualize how the trail rises and falls. Key points along the way are labeled. Note the number of feet between each tick mark on the vertical axis (the height scale). To keep flat hikes from looking steep and steep hikes from appearing flat, height scales are included to provide an accurate assessment of climbing difficulty.

GPS TRAILHEAD COORDINATES

To collect accurate map data, I carried a handheld GPS unit (Garmin eTrex series) as I scouted. The data collected was then downloaded and plotted onto a digital U.S. Geological Survey (USGS) topo map. In addition to rendering highly specific trail outlines, this book also includes the GPS coordinates for each trailhead in two formats: latitude–longitude and Universal Transverse Mercator (UTM). Latitude coordinates tell you where you are by locating points west of the zero-degree meridian line that passes through Greenwich; longitude coordinates do so by locating points north or south of the zero-degree line that belts the Earth, aka the equator.