From Machu Picchu to the Darien gap, here are twenty five most dangerous hiking, climbing and transitions in the world. Huayna Picchu, Peru can walk to Machu Picchu is one thing. However, the continuation of this walk past Machu Picchu and up to the mountain of Huayna Picchu is another. Also known as Hike of Death, by climbing this mountain takes more lives each year. View of Machu Picchu from the bird’s-eye view, presumably, is worth it.