Читать книгу 50 Best Short Hikes: Yosemite National Park and Vicinity онлайн

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ALTITUDE SICKNESS The walks around Tuolumne Meadows and Tioga Pass are at quite high elevations, and the air’s oxygen content is considerably lower than at sea level. People not accustomed to high elevation are susceptible to altitude sickness. The best way to avoid it is to drink plenty of water, eat food, and walk slowly. Mild altitude sickness presents itself as a headache and a generally unwell feeling. With these symptoms it is safe to slowly continue to your destination. However, you should retreat to lower elevations if nausea persists or you feel that you are having an intensely difficult time breathing.

LIGHTNING Thunderstorms are a regular summer occurrence around Tenaya Lake, Tuolumne Meadows, and Tioga Pass. If it is going to be a stormy day, clouds will begin to build up in the late morning or early afternoon, leading to mid- to late afternoon rain, hail, and lightning. You should avoid all open, exposed landscape, especially summits and exposed slabs, once you see the tall, dark thunderheads building. The sky can quickly transition from scattered clouds to a vicious storm. If you find yourself in an exposed location when the storm begins, stay out of shallow caves and away from overhangs. Then get in the lightning position, both to reduce the likelihood of a direct strike and to reduce the seriousness of any injury you may sustain. The National Outdoor Leadership School recommends squatting or sitting as low as possible, on a pile of clothes, and wrapping your arms around your legs. This position minimizes the chance of a ground current flowing through you. Close your eyes and keep your feet together to prevent the current from flowing in one foot and out the other.