2-3 million years old and one of only 20 ancient lakes in the world.

The water is 99.994% pure, making it one of the purest large lakes in the world. For comparison, commercially distilled water is 99.998% pure.

Only Lake Titicaca is both higher and bigger

11th deepest in the world

31st largest lake overall by volume

Lake has an average annual clarity of 71 feet (the depth that a ten inch white disk is still visible from above the surface)

Quite an amazing place and another great natural wonder in the most beautiful country on earth