The Incas built Machu Picchu high in the mountains largely because it was so remote. Now these perfect mountains are about to be transformed forever by Swiss engineering, much to the horror of many travellers who trek for days along the Inca Trail to experience the magic of Machu Picchu. "We've travelled over 40 kilometers over the most amazing terrain to get here, and now people are just going to fly through the air by cable car - it just seems wrong," says British tourist Amy Grundy.