Surface travel between Panama and Colombia and further on into South America is a real challenge, as anyone planning a tour of the Americas along the Pan American Highway will quickly find out. One major obstacle is that this part of the Highway was never built, so if you want to make it through the Darien you will need a good machete. No, wait, make that a chainsaw. And take lots of spare fuel (for the chainsaw, not the vehicle). Another problem, the jungle is populated by Guerrilla groups and drug cartels.