The zone included within the borderlines from the point where the Murri River flows into the Atrato River, downstream along the Atrato River to where it flows into the Atlantic Ocean from this point to the Panamanian border following the Atlantic coast-line to Cabo Tiburón; from this point to the Pacific Ocean following the Columbian-Panamanian border; from this point to the mouth of the Valle River along the Pacific coast and from this point along a straight line to the point where the Murri River flows into the Atrato River
Järgmiselt piiratud ala: punktist, kus Murri jõgi suubub Atrato jõkke, allavoolu mööda Atrato jõge kuni kohani, kus see suubub Atlandi ookeani; sellest punktist mööda Atlandi ookeani rannikujoont Tiburóni neemeni Panama piiril; sellest punktist Vaiksesse ookeani mööda Colombia–Panama piiri; sellest punktist Valle jõe suudmesse mööda Vaikse ookeani rannikut ja sealt sirgjoones punktini, kus Murri jõgi suubub Atrato jõkke