Amazonas (Colombian department) in the context of Vaupés Department

Bora–Witóto (also Bora–Huitoto, Bora–Uitoto, or, ambiguously, Witotoan) is a proposal to unite the Boran and Witotoan language families of southwestern Colombia (Amazonas Department) and neighboring regions of Peru and Brazil. Kaufman (1994) added the Andoque language.

Amazon natural region in southern Colombia comprises the departments of Amazonas, Caquetá, Guainía, Guaviare, Putumayo and Vaupés, and covers an area of 483,000 square kilometres (186,000 sq mi), 35% of Colombia's total territory. The region is mostly covered by tropical rainforest, or jungle, which is a part of the greater Amazon rainforest.

Amazonas (pronounced [amaˈzõnɐs] AM-ə-ZOHN-əs) is a state of Brazil, located in the North Region in the north-western corner of the country. It is the largest Brazilian state by area and the ninth-largest country subdivision in the world with an area of 1,570,745.7 square kilometers. It is the largest country subdivision in South America, being greater than the areas of Chile, Paraguay, and Uruguay combined. Neighbouring states are (from the north clockwise) Roraima, Pará, Mato Grosso, Rondônia, and Acre. It also borders the nations of Peru, Colombia and Venezuela. This includes the Departments of Amazonas, Vaupés and Guainía in Colombia, as well as the Amazonas state in Venezuela, and the Loreto Region in Peru.

Amazonas is named after the Amazon River, and was formerly part of the Spanish Empire's Viceroyalty of Peru, a region called Spanish Guyana. It was settled by the Portuguese moving northwest from Brazil in the early 18th century and incorporated into the Portuguese empire after the Treaty of Madrid in 1750. It became a state under the First Brazilian Republic in 1889.

The region known as Cabeça do Cachorro (Dog‘s head) is the area comprising the northwesternmost end of the state of Amazonas, Brazil, bordering on Colombia and Venezuela.

This region roughly coincides with the Brazilian municipality of São Gabriel da Cachoeira and parts of Japurá, and shares international borders with the Venezuelan state of Amazonas (to the northeast), and the Colombian departments of Guainía (to north), Vaupés (to west) and Amazonas (to southwest). The Brazilian Army maintains a border platoon next to the border tripoint, at the village of Cucuí, where there is also a Brazilian Air Force base.

Witotoan (also Huitotoan or Uitotoan, occasionally known as Huitoto–Ocaina to distinguish it from Bora–Witoto) is a small language family of southeastern Colombia (Amazonas Department) and the neighbouring region of Peru.

Amazonas (/ˌæməˈzoʊnəs/, AM-ə-ZOHN-əs; pronounced [amaˈzõnɐs] ) is a state of Brazil, located in the North Region in the north-western corner of the country. It is the largest Brazilian state by area and the ninth-largest country subdivision in the world with an area of 1,570,745.7 square kilometers. It is the largest country subdivision in South America, being greater than the areas of Chile, Paraguay, and Uruguay combined. Neighbouring states are (from the north clockwise) Roraima, Pará, Mato Grosso, Rondônia, and Acre. It also borders the nations of Peru, Colombia and Venezuela. This includes the Departments of Amazonas, Vaupés and Guainía in Colombia, as well as the Amazonas state in Venezuela, and the Loreto Region in Peru.

Amazonas is named after the Amazon River, and was formerly part of the Spanish Empire's Viceroyalty of Peru, a region called Spanish Guyana. It was settled by the Portuguese moving northwest from Brazil in the early 18th century and incorporated into the Portuguese empire after the Treaty of Madrid in 1750. It became a state under the First Brazilian Republic in 1889.