Potosi A late night bus and a close encounter with a petrol tanker, we arrived safely in Potosí, the highest city in the world. Set at a mere 4200m (about 14,000ft) above sea level, Potosi was, in its pomp, a city to rival London and larger than Madrid. Also, it contains one of only three Spanish colonial mints (the others were in Lima and Mexico City, fact fans!). A new city meant another search for a new mirador and the perfect picture. In this case, a great view of Cerro Rico, whose mines furnished the Spanish with a considerable amount of silver. You can visit the mines, but the conditions inside are appalling. Some suggest working in them can reduce life expectancy by at least 15 years. Before entering, all visitors need to visit the miners´
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