For the most part, dangers in Chile’s Southern Patagonia and Tierra del Fuego are the elements. During the summer when most tourists come, winds are strong, making trekking, biking and even car driving difficult. If riding or driving, traverse the gravel roads with caution. Traction is different than on paved surfaces. Moderate your speed, and beware of flying stones. In winter, tire chains are needed.

At any time of the year the weather can change quickly, with sleet, ice and low temperatures. Always carry warm clothing and water / windproofs. The sun is strong and glares off the glacier and snow. Use 400 UVA sunglasses and good sunblock.

Another natural hazard is hanta, a virus carried in excrement of rodents (see Major Health Problems). If camping, carry chlorine (cloro) to clean areas where you going to eat and also put around edge of tent. Hang food from trees.