This land of impenetrable forests is believed to be the last refuge for a unique wildlife (orchids, bromeliads and tree-born ferns) and unique species on the verge of extinction (the spectacled bear, the dwarf deer and the yellow-tailed choro monkey).
This area formed part of the vast and complex network of pre-Colombian roads that linked the highlands to the jungle. One of these routes leads to Kuélap, the Chachapoyas fortress deep in the jungle department of Amazonas.
Other fascinating routes in the eastern Andes include the trails that descend to the east of Cuzco and Puno, and make up spectacular, little-known circuits for trekking enthusiasts.