Visitors unaccustomed to high elevations may experience mild symptoms of high altitude sickness. These include nausea, dizziness, headache, rapid heartbeat, and shortness of breath. Minimize these effects by increasing fluid intake, avoiding alcohol and cigarettes, eating lightly and frequently and getting plenty of rest.
Ultraviolet radiation is also a threat at high elevations.
Wear sunglasses with ultraviolet protection, a hat, long-sleeved garments, and use sunscreen to prevent sunburn. Never feed wildlife. By luring wildlife into traffic areas they are frequently hit by cars. Wildlife can become dependent on human food, and even lose the ability to hunt. Wildlife carry diseases such as rabies, hantavirus or bubonic plague that can be transmitted to humans.