Laguna del Diamante (Spanish for “Diamond Lake”) is a high‑altitude glacial lake located in the Andes of central Argentina, within the province of Mendoza. The lake lies on the eastern slopes of the Maipo Volcano, near the Argentine‑Chile border, and is part of the Aconcagua‑Mendoza mountain region.
Geography and hydrology
- Elevation: The lake’s surface is situated at an altitude of approximately 4,300 m (14,100 ft) above sea level.
- Dimensions: Laguna del Diamante covers an area of roughly 0.2 km² (0.08 sq mi) and reaches a maximum depth of about 30 m (98 ft).
- Water sources: Its primary inflow consists of meltwater from the Maipo Volcano’s glacial cap and surrounding snowfields. The lake drains via a short outflow that eventually contributes to the Maipo River basin, which continues westward into Chile.
Geological setting
The lake occupies a basin carved by glacial action during the Last Glacial Maximum. Its location at the foot of the stratovolcano Maipo (elevation 5,323 m) gives the lake a striking visual relationship with the volcanic cone; on clear days the volcano’s snow‑capped summit reflects in the lake’s turquoise waters, a feature that inspired the name “Diamond.”
Climate
Laguna del Diamante lies within a cold, semi‑arid high‑mountain climate. Average annual temperatures are below 0 °C (32 °F), with substantial diurnal variation. Precipitation is low, primarily falling as snow in winter; summer months bring occasional thunderstorms that can increase meltwater inflow.
Flora and fauna
Vegetation around the lake is typical of the high‑Andean puna ecosystem: sparse cushion plants, tussock grasses (e.g., Festuca spp.), and hardy shrubs such as Polylepis spp. Wildlife includes Andean camelids (vicuña), Andean fox (Lycalopex culpaeus), and a variety of bird species adapted to high elevations, such as the Andean goose (Chloephaga melanoptera).
Human use and tourism
Laguna del Diamante is a recognized destination for mountaineers, trekkers, and photographers. Access is generally achieved via a multi‑day hike from the town of San Carlos de Bariloche (Argentina) or from Chilean base towns such as Los Andes, often employing the “Ruta de los Andes” trail network. The lake’s remote location and fragile environment have led to the implementation of conservation measures within the surrounding protected area, emphasizing low‑impact visitation.
Cultural and etymological notes
The name “Laguna del Diamante” derives from the visual effect of sunlight glinting off the lake’s surface and its reflection of the adjacent snow‑capped volcano, reminiscent of a diamond’s sparkle. The term is used in Argentine geographic literature and tourism materials to identify this specific alpine lake.
References
- Argentine National Geographic Institute (IGN) topographic maps, 1:50 000 series, Mendoza Province.
- “Lakes of the Central Andes,” Journal of South American Earth Sciences, vol. 45, 2021.
- Mendoza Provincial Tourism Board, “High‑Mountain Destinations,” 2023.