Mt Chacaltaya (5395m / 17,700ft) is best known for having the worlds highest ski lift and also the northernmost in South America. Only 30km / 20 miles from Bolivia's capital La Paz, it was Bolivia's only ski "resort" and a popular skiing trip. The tow lift and old ski hut were built by the Club Andino Boliviano in 1939. The mountain is also a high profile and well studied casualty of climate change - its glacier began to recede much more rapidly than before around 1980 and had all but disappeared by 2009. Any snow cover on the mountain is now the result of snowfalls rather than a permanent icefield.