Читать книгу Backpacking Arizona. From Deep Canyons to Sky Islands онлайн
12 страница из 56
Miles
This is basic mileage for the primary trip, with no side trips or options. Since official trail mileage varies widely in accuracy, the author measured the trip distance on 1:24000 scale U.S.G.S. topographic maps. Such map-derived distances tend to be slightly shorter than mileages measured with a trail wheel on the ground, but they are very consistent. A second mileage figure in parentheses below the primary number gives the total distance for the primary trip and all optional side trips described. Some of the loop trips have short-cut options that make the loop shorter. In this case the mileage in parentheses is less than the main loop mileage.
Elevation Gain
This number is an attempt to give the total elevation gain on the primary trip. It doesn’t count minor ups and downs that are too small to show on a U.S.G.S. 1:24000 topographic map. A second number in parentheses shows the elevation gain or loss for the primary trip plus all optional side trips. Some of the loop trips have short-cut options. In this case the elevation gain in parentheses may be less than that of the main loop.