
Up through beech forest to a lagoon the colour of antifreeze, with the wind doing its best to send us back.
We left the car in Villa Cerro Castillo and walked up. The guidebook calls the first section "sustained". The guidebook is being polite.
Four hours of scree and beech forest and then the Laguna Cerro Castillo appears below the spires, that impossible mineral turquoise, with a small glacier still calving pieces the size of dinner tables into it.

The wind on the col was the strongest I have stood up in. You lean into it and it holds you, and then it stops holding you, which is the part to watch.
Quiz
Glacial lakes are that turquoise because of what, exactly?
Down in seven hours total. Legs gone. Worth every metre.
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