[1][2][3][4] The park occupies about 43,000 km2 (17,000 sq mi) and includes the Serranía de Chiribiquete mountains and the surrounding lowlands, which are covered by tropical moist forests, savannas and rivers.

[1][3] Colombian president Juan Manuel Santos announced that Chiribiquete National Park would be expanded by 15,000 km2 (5,800 sq mi) on 21 February 2018.

Further research was carried out by Carlos Castaños, former director of the National Natural Parks System of Colombia, and Dutch geologist and paleontologist Thomas van der Hammen from 1990 to 1992.

[4][10][11] Chiribiquete National Park is situated in the western region of the Guiana Shield, east of the Eastern Cordillera, north of the Amazonian plains, west of the Upper Río Negro, and south of the savannas of the Orinoquía.

[2] The mountain ridge of Chiribiquete is an important remnant of the rocky chain belonging to the Precambrian and Paleozoic formations that make up the Guiana Shield.

[1][10][11] Chiribiquete National Park contains the drainage basins of the Mesay, Cuñare, San Jorge and Amú Rivers.

The park has high levels of cloud cover due to the geographic orientation of the Serranía de Chiribiquete mountains.

[11][14][15] Chiribiquete is home to 30% of the ecosystems and flora of the Colombian Amazon, and researchers have discovered 1,801 plant species in the park to date.

[16] The tropical moist forests of Chiribiquete are highly developed and can reach great heights, with certain trees growing up to 40 m (130 ft).

Places with sparse soil cover, like waterfalls and rocky surfaces, are home to many endemic plants, including the monotypic genus Senefelderopsis, Hevea nitida var.

It is also home to armadillos in the genus Dasypus, the giant anteater, black agouti, lowland paca, Amazon river dolphin, white-lipped peccary and Brazilian tapir.