Chapada dos Veadeiros is a plateau of quartz rock in the state of Goiás, in central Brazil, where waterfalls drop in tiers into pools you swim in and the rivers have polished the stone into basins that look like the moon, on one of the oldest exposed surfaces on Earth. The rock is quartzite laid down nearly two billion years ago, and it is why the water is so clear: the rivers run over crystal rather than mud, and the pools at the foot of the falls are cold and almost transparent. The centrepiece is the Saltos do Rio Preto, twin drops of 80 and 120 metres into a canyon, reached on a trail through the park from the village of São Jorge; below the falls you wade into pools where the quartz-filtered water runs clear over pale stone, and the trail continues down into the canyons of the Rio Preto between steep quartzite walls. Just outside the park the São Miguel river has worn the grey rock of the Vale da Lua into a field of smooth hollows and basins, walked across barefoot in the heat.
The plateau guards the purest stretch of the Cerrado, the ancient savanna of central Brazil, a landscape of twisted trees, tall grass and flowering plants cleared across most of its range for soy and cattle; here it is intact, with maned wolves, giant anteaters and rheas on the plains and a burst of flowers after the first rains. The name means plateau of the deer hunters, after the men who once tracked wild deer across these highlands with dogs. In the remote valleys around the park live the Kalunga, the largest quilombo territory in Brazil, communities descended from Africans who escaped slavery and hid here two centuries ago. The plateau lies near the fourteenth parallel south, a line said to pass through Machu Picchu, and the claim has given the place a long mystical reputation and a village of crystal shops. Chapada dos Veadeiros is a waterfall park on a two-billion-year-old floor, and the water is the clearest in Brazil.