The Darién Gap is a band of dense and entirely untamed rainforest, 100km or so in length, that keeps the northern strand of the Interamericana (Panamerican Highway) from joining up with the southern strand. Crossing the Gap was, for many years, one of the most celebrated adventures in Latin America. However, for some years its undertaking has been banned by the Panamanian authorities while travellers who have ignored this ruling have disappeared or been killed attempting the trip. It’s also worth remembering that there is a war raging across the border in Colombia.
Currently the Panamanian authorities do not allow civilians to travel east of Boca de Cupé. The two ways to travel to Colombia are via Guna Yala and along the Caribbean coast, or along the Pacific coast, by catching a ride in one of the commercial boats that leaves Panama City or La Palma for Jaqué, and then from there to Colombia. This latter route is not recommended as boats are very infrequent, and will be extremely basic, may lack sufficient life-jackets, or may not be robust enough for the sea when rough.