New LiDAR data has uncovered the ruins of a 1,500-year-old 'vertical city' hidden beneath the dense cloud forest of northern Peru. Built by the Chachapoya culture, also known as the 'People of the Clouds,' the settlement consists of hundreds of circular stone dwellings perched on sheer limestone cliffs, connected by an intricate network of narrow walkways and carved staircases.
The site appears to have been a defensive stronghold designed to monitor trade routes between the Andes and the Amazon. Researchers note that the city’s unique architectural layout demonstrates an extraordinary level of engineering adapted to vertical terrain, a feat previously unseen on this scale in pre-Columbian South America.