The Darién Gap is a break in the Pan-American Highway consisting of a large swath of undeveloped swampland and forest within Panama's Darién Province in Central America and the northern portion of Colombia's Chocó Department in South America. It measures just over long and about wide. Roadbuilding through this area is expensive, and the environmental cost is high. Political consensus in favor of road construction has not emerged. Consequently there is no road connection through the Darién Gap connecting North America with South America and it is the missing link of the Pan-American Highway.