In the rainy season, the 4,000-mile river crashes over its banks, turning entire forests into inland seas and camouflaging many of the dangers that lurk beneath.
Where to catch some of the world’s most exciting competitions – from balloon racing in Reno to jungle rafting down the Amazon.
In the desert of southern Peru, giant etchings of spiders, whales, people and trapezoids stretching across 450sqkm have adorned the landscape for 2,000 years.
Described as “the best alpine trek in the world", this 170km of hard, exhilarating mountain walking is best experienced through the eyes of a local mountain guide.
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