General Information About the Republic of Panama and Provinces
The Darién Gap is a large swath of undeveloped swampland and forest separating Panama and Colombia. It measures just over 160 km (100 miles) long and about 50 km (30 miles) wide. It is not possible to cross between South America and Central America by land without passing through the Darién Gap. As roadbuilding through this area is expensive, political consensus in favor of construction has not emerged, and the environmental toll is steep, it is the missing link in a road connection through the American continents. Source: Wikipedia