The water is an intense emerald green and the surface spans approximately 1028 km2. It is surrounded by Andean peaks, where apparently there are no signs of life and on the southern lakeside thermal water emerges to the surface. 

You will also be able to see strange layers of colour along the edge of the lagoon, which are products of successive volcanic contributions, such as lava and ash, evidence of the Volcano Ojos del Salado’s last eruption in1956. It is just 21 km from the Argentinian border, along the road to the Paso San Francisco.