The Darien Gap

The Darien Gap is a 100-mile gap in the Pan-America Highway, covering terrain that includes Panama and Columbia, but is effectively governed by neither. Most of it is marshland and with virtually no infrastructure it is a wet cesspool of tropical disease and, historically, paramilitary groups. People do live in it, in certain regions, and migrants traverse its more worn paths out of desperation, but it's virtually guaranteed to claim the lives of the careless. There is nothing of civilization or man's law there.