More than 1,500 massive underground tunnels have been found in southern Brazil. Some stretch longer than six football fields. The structures were not carved by humans, according to researchers.

Satellite images have revealed an ancient system of elaborate, funnel-shaped mega traps likely built by hunters and pastoralists to catch prey in the high altitudes of northern Chile. New research on ...

An area called the central Southern Cone in South America, which consists of a large part of Argentina, is known to be one of the last global regions to become inhabited by humans. Despite research ...