From Cusco to Puerto Maldonado, elevation drops dramatically from 11,000 ft to 600 ft. The grand Andes gives its way to the endless tropical rainforest within half-an-hour flight.

Not only I was crazy enough to got up at 3am and climbed Huayna Picchu, but also I chose to hike, instead of taking the bus, to the citadel. It was an agonizing yet rewarding journey.