Brief synthesisLos Katíos National Park has great biological wealth and a privileged role in the South American continent's biogeographical history. Criterion (ix): Los Katíos played a major role in the biogeographical history of the Americas, a role which continues today. Los Katíos is unique in South America for the large number of typically Central American species found in the park. IntegrityLos Katíos was declared a National Park in 1973 and its boundaries were increased in 1979 to reach its current extent of 72,000 ha today. Coordinated actions with the Panamanian authorities of the Darién National Park are essential for long-term conservation success.