[1] During the installation of a gas pipeline through the ANMI, a large trove of Pre-Columbian artefacts were found, dating from the years 1000 to 1500.

[3] On 31 July 1997 Supreme Decree 24734 renamed, reorganised and enlarged the Natural Area, growing it to its modern girth.

[5] Besides the hyacinthine macaw, other birds found here are the piyo (Rhea americana), the stork Jabiru mycteria, a curassow called pava mutún (Mitu tuberosa), Paroaria coronata (a cardinal), Chloroceryle amazona (a kingfisher), the harpy eagle (Harpia harpyja) and the eagle Buteogallus urubitinga.

[8] Typical mammals of the ANMI San Matías are the giant otter Pteronura brasiliensis, marsh deer or ciervo de los pantanos (Blastocerus dichotomus), pampas deer (Ozotoceros bezoarticus), manechi or black howler monkey (Alouatta caraya) and the peccaries pecarí (Tayassu pecari) and taitetú (T. tajacu).

Other of 90 species which have been reported as present are tigres or jaguars (Panthera onca), ocelot (Leopardus pardalis), the maned wolf or borochi (Chrysocyon brachyurus), tapir (Tapirus terrestris), huaso (Mazama americana) and urina (M. gouazoubira) deer, jochi calucha or agouti (Dasyprocta punctata), jochi pintado or paca (Cuniculus paca), the pejichi or giant armadillo (Priodontes maximus) and the tatú armadillo Dasypus novemcinctus.

[5] The dry season (June to November) is the best time for tourism, as the land is not flooded and the roads stable.

The road runs through the towns of San José de Chiquitos, Roboré, El Carmen and Puerto Suárez.

There are daily flights from Santa Cruz to Puerto Suárez, and there are three much closer villages with airstrips for small planes in the area: Rincón del Tigre, Santo Corazón and San Fernando.

[2] There is a village in the east of the ANMI, Santo Corazón, where tourists can meet Ayoreo and Chiquitano people.