The Editor

Llanos de Challe National Park is located along the coast of northern Chile's Atacama Region and features a coastal desert ecosystem which is habitat for rare and threatened plant species. It is one of the southernmost locations of the coastal desert lomas.

The Uruguay River is a major river in South America. Its headwaters originate in Brazil's coastal range. The river forms parts of the boundaries of Brazil, Uruguay and Argentina before eventually joining the Río de la Plata.

The Gulf of Darién is the southernmost extension of the Caribbean Sea. The Pan-American Highway is a network of roads, stretching from Prudhoe Bay, Alaska, to the lower reaches of South America. It is interrupted between Panama and Colombia by the Darién Gap.

El Impenetrable National Park is located in northern Argentina's Chaco Province which lies within the vast lowland plain known as the Gran Chaco. It is situated in the center of the area known as the "Impenetrable Region" or "El Impenetrable" due to its dense woodlands and limited waterways.