Camping conditions on the altiplano and southern patagonia
Not much to add here but I camped all over altiplano from November to end of January, the absolute coldest was at Laguna verde on the Bolivian SW circuit, at something like 4500. No idea how cold it was but felt like my -7 (comfort zone for men) was at its limit, I had all my clothes on, plus thermals and liner (another -5 to the bag rating) so maybe it was minus 10 to minus 15, no idea but was very cold. Everything else was OK and never felt cold, even on salt flats. Key is to get out of the wind, though in my experience wind builds up from around midday and blows a gale until sundown when it stops dead.
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