Darién Gap

The Darién Gap (Spanish: Región del Darién or Tapón del Darién) is a large swath of undeveloped swampland and forest separating Panama's Darién Province in Central America from Colombia in South America. It measures just over 160 km (99 mi) long and about 50 km (31 mi) wide. Roadbuilding through this area is expensive, and the environmental toll is steep. Political consensus in favor of road construction has not emerged. Consequently there is no road connection through the Darién Gap connecting North/Central America with South America and it is the missing link of the Pan-American Highway.

• http://en.wikipedia.org/wiki/Darién Gap