Laguna Verde, a mesmerizing emerald-hued lake, is situated within Bolivia's Eduardo Avaroa Andean Fauna National Reserve, predominantly visited via multi-day 4x4 tours that often depart from San Pedro de Atacama, Chile. Given its extremely remote location and very high altitude (over 4,000m), guided tours are indispensable for safety and navigation; solo visits are strongly discouraged. While accessible year-round, conditions are challenging; expect extreme cold, strong winds, and very basic tour accommodations, particularly during the winter months (June-August). It is vital to properly acclimatize to the altitude before visiting to mitigate altitude sickness. A typical visit to the lake itself lasts 30-60 minutes as part of a longer 3-day tour, which can cost approximately $200-$500+ USD, excluding an additional park entry fee of around $20-$30 USD. Essential items include warm layered clothing, sun protection, and remedies for altitude sickness.