Victims can die if they aren't transported right away to a lower altitude, he says. Rob Wissinger, emergency medical services coordinator for Zion National Park, says altitude sickness at Zion is pretty rare.
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Some of Zion's hiking trails can be very challenging. While some are paved and relatively easy, others can be very strenuous and require specialized skills. Before starting down any trail be sure to research its length, difficulty, and uncommon features.
Angels Landing is first on the list of the most difficult hikes in Zion. It is one of the most popular hikes in Zion as it attracts hundreds of thousands of visitors each year. However, it is also the most dangerous hike in Zion and one of the most dangerous hikes in the U.S.
The park enjoys relatively good air quality, but it is upwind of urban and industrial sources of air pollution. Air pollutants blown into the park can harm natural and scenic resources such as soils, surface waters, plants, wildlife, and visibility.