Laguna Llancanelo: Driving the Challenging Ruta 186
The Laguna Llancanelo (Llancanelo Lake) is a unique, high-altitude, saline lake located in the remote south of Mendoza Province, Argentina. Situated at an elevation of 1,280 meters (4,199 ft) above sea level, the lake is notable not only for its rugged access road but also for its exceptional ecological value.
Where is Laguna Llancanelo located, and what is the road like?
The lake is nestled in the foothills of the Andes Mountains, in the south of Mendoza Province, Argentina. The main access route is the Ruta Provincial 186 (RP-186). The road is 87 kilometers (54 miles) long, running west-east from the paved RN40 (south of Malargüe) to the unpaved RP180, near Agua Escondida.
What are the driving conditions on Ruta 186?
The road surface consists of ripio (gravel) and is generally in pretty good condition, mostly sandy with a few corrugations. Crucially, the speed is limited to 60 km/h. Under dry conditions, a normal car can attempt this route.
When is a 4x4 vehicle required for the Ruta 186?
Due to the unstable soil conditions in the semi-desert environment, the track can get very muddy and slippery after rain. Therefore, after rainfall, a 4x4 vehicle may be necessary to safely navigate the wet and challenging sections. During and immediately after a storm, the road may be temporarily impassable.
Why is Laguna Llancanelo ecologically significant?
Llancanelo Lake is recognized as a Ramsar Site, designated as a wetland of international importance, particularly as a habitat for waterfowl. As a high-altitude saline lake, it supports an important ecosystem, including significant populations of flamingos and other migratory birds. This ecological status adds another dimension to the importance of the remote area.