A natural reserve located to the orient of the island, extending across the Cuban provinces of Holguín and Guantánamo. It is named after the German scientist Alexander von Humboldt who visited the island in 1800 and 1801, and became known as the third discoverer of Cuba due to his scientific research related to the island’s nature. Because of its biodiversity, the park was designated a World Heritage Site by Unesco in the year 2001.

The site in question constitutes the most important natural wildlife sanctuary in Cuba, not only because it possesses the greatest wealth and endemism in the country, but also because within it lies the largest remnant of the mountainous ecosystems conserved in Cuba.

It is the primary core of the biosphere reserve Cuchillas del Toa, the greatest and most precious of the four existent in Cuba, since it sustains the most important and significant natural habitat in all the insular Caribbean in terms of in situ conservation of terrestrial biodiversity.