The Darién Gap (Spanish: Región del Darién or Tapón del Darién) 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 160 km (99 mi) long and about 50 km (31 mi) wide. Roadbuilding through this area is expensive, and the environmental cost is high. Political consensus in favor of road construction has not emerged.