Reserva de Fauna de Eduardo Avaroa | Uyuni

Reserva de Fauna de Eduardo Avaroa is a protected wildlife reserve located in the Potosí Department of southwestern Bolivia, near the border with Chile.

Visual Characteristics

The reserve encompasses high-altitude Andean landscapes characterized by volcanic formations, salt flats, geysers, hot springs, and numerous colored lagoons. Vegetation is sparse, consisting primarily of high-altitude grasses and cushion plants. Rock formations are predominantly volcanic in origin, with varied textures and colors ranging from ochre to dark grey. Lagoons exhibit distinct colors due to mineral content and algae, appearing red, green, or white.

Location & Access Logistics

The reserve is situated approximately 200 kilometers south of Uyuni. Access is primarily via unpaved roads, requiring a 4x4 vehicle. The journey from Uyuni typically takes 6-8 hours. There is no public transport directly serving the reserve. Parking is available at designated visitor areas and near accommodation facilities, though it is informal.

Historical & Ecological Origin

The Reserva de Fauna de Fauna de Eduardo Avaroa was established on April 14, 1973, to protect its unique high-altitude ecosystems and wildlife. Ecologically, it is classified as a high-altitude Andean puna and Altiplano region, characterized by extreme aridity, high solar radiation, and significant diurnal temperature fluctuations. The geological features are a result of ongoing volcanic activity and tectonic processes.

Key Highlights & Activities

Activities include wildlife observation, particularly of flamingos (Andean, Chilean, and James's), vicuñas, and rheas. Visiting the Sol de Mañana geyser field, the Polques hot springs, and the colored lagoons (Laguna Colorada, Laguna Verde) are primary objectives. Photography of the landscape and wildlife is a common activity. Hiking is possible in designated areas, but altitude sickness is a significant consideration.

Infrastructure & Amenities

Basic infrastructure includes rudimentary visitor shelters and limited restroom facilities at key points like Laguna Colorada. Shade is minimal, provided only by natural rock formations or small structures. Cell phone signal is generally absent within the reserve. Food vendors are not present; visitors must carry all provisions.

Best Time to Visit

The dry season, from April to October, offers more stable weather conditions. The best time of day for photography is typically early morning or late afternoon for softer light. High tide is not a relevant factor for this terrestrial reserve. Temperatures can drop significantly below freezing at night, even during the dry season.

Facts & Legends

Laguna Colorada's red hue is caused by red sediments and the pigmentation of algae, which are influenced by the concentration of borax. Local folklore sometimes attributes the colors of the lagoons to the spilled blood of ancient gods or mythical creatures.

Nearby Landmarks

• Salar de Uyuni (150km North)
• Laguna Hedionda (30km North)
• Volcán Licancabur (50km Southwest, across the border in Chile)
• Salar de Chalviri (40km Southwest)