CNN’s Nick Paton Walsh, travels with a group of migrants as they make the arduous trek on foot through Central and South America. The journey through the Darien Gap is a perilous jungle crossing between Colombia and Panama that many migrants must face as they head north to seek asylum in the United States. Over five harrowing days, Paton Walsh hikes the full 66-mile roadless route, documenting the heroism of everyday people, milked for cash by drug cartels and unwanted by any country, as they battle the dense rainforest in search of a better life.