Why some travelers seek out the world's most dangerous locales

By Henry Wismayer, for CNNUpdated 21st June 2013
Many travelers seek out Afghanistan's mountain-rimmed lakes in the Hindu Kush.
Many travelers seek out Afghanistan's mountain-rimmed lakes in the Hindu Kush.
courtesy Õnne Pärl
Could this be the next Machu Picchu?
Could this be the next Machu Picchu?
courtesy Turcol
At 5,671 meters (18,605 feet), Mount Damavand is one of the planet's great trekking peaks.
At 5,671 meters (18,605 feet), Mount Damavand is one of the planet's great trekking peaks.
courtesy Mohammad Hajabolfath
Adventurous skiers head for Kashmir and its pristine slopes.
Adventurous skiers head for Kashmir and its pristine slopes.
courtesy Mountain Tracks
Virunga National Park contains the world's largest lava lake.
Virunga National Park contains the world's largest lava lake.
courtesy Virungas National Park