The higher altitude increases the amount of ultraviolet lig htreaching your skin. People from lower elevations should also consider the altitude when planning backcountry travel. The thin air can cause even strong athletes to perform a bit under par if they haven't taken time to adapt. Driving Be alert while driving in the parks. Wildlife frequently feeds along roadsides and sometimes jumps in front of cars.
Mountain roads are narrow and occasionally littered with fallen rock, especially after a rainfall.
Particularly during heavy traffic periods, watch for other drivers who may stop suddenly to avoid hazards or to take pictures. Hypothermia This life-threatening condition occurs when you are so chilled that your body can no longer warm itself. It can happen even when you are tired and wet on a chilly summer day. Warning signals are shivering and disorientation. Seek shelter and raise your body temperature by drinking warm liquids.