Watch on Soap2day. Spanning 30,000 kilometres from Prudhoe Bay in Alaska to Ushuaia in Argentina, the Pan-American Highway is the world’s longest road. It connects North and South America. Except….for a dense impenetrable jungle on the Panama-Colombia border. This is the Darién Gap. Known locally as El Tapón or the "The Plug", this is the only land bridge between the Americas. This 106 kilometres break in the Pan-American Highway of dense jungle is one of the last great untamed places on earth, one of the world’s most biodiverse places, an incredibly beautiful piece of nature, but to those passing through it is… "A nightmare with 1,001 demons".