Located in the Andes mountain range, the trail passes through several types of Andean environments including cloud forest and alpine tundra. Settlements, tunnels, and many Incan ruins are located along the trail before ending the terminus at the Sun Gate on Machu Picchu mountain. The two longer routes require an ascent to beyond 3,660 metres (12,010 ft) above sea level, which can result in altitude sickness. http://ping.fm/Mvl98