The Inca Trail is by far the most famous trek in South America and is rated by many to be in the top 5 treks in the world. In just 26 miles (45km) it manages to combine beautiful mountain scenery, lush cloud-forest, and subtropical jungle and, of course, a stunning mix of Inca paving stones ruins and tunnels. http://www.inkatrailtomachupicchu.com/
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