The Puna de Atacama reaches very high elevations, with many areas above 3,500 meters and some landscapes rising beyond 4,000 meters. At these heights, altitude sickness can affect travelers who are not acclimatized, with symptoms such as headaches, fatigue, dizziness, or shortness of breath. Ascending gradually, staying hydrated, and allowing time for your body to adjust can reduce the risk and make the journey more comfortable. Most healthy travelers adapt without serious problems, but severe or worsening symptoms should be taken seriously and require prompt descent and medical attention.