The Amazon Rainforest is a dense wilderness.

(Photo: Photo: GUSTAVOFRAZAO/Depositphotos)

The Amazon Rainforest hides many mysteries.

Yet unknown species scurry under the dense canopy of leaves and its plants may hold hidden cures to diseases.

Lasers Reveal 2,500-Year–Old Cities Underneath the Amazon Rainforest

The Amazon Rainforest is a dense wilderness. (Photo: Photo: GUSTAVOFRAZAO/Depositphotos)

Under the greenery also lies the relics of thousands of years of history and human occupation.

Modern laser technology is now exposing this past.

Lidar is a laser technology usually used from an airplane.

Lasers Reveal 2,500-Year–Old Cities Underneath the Amazon Rainforest

A lidar image of a street in the city of Kunguints underneath the Amazon in Ecuador. (Photo: Antoine Dorison and Stephen Rostain)

A laser sends pulses which are reflected back off surface obstructions.

This data is collected and combined with location data.

It can essentially cut through the dense jungle foliage to expose ruins and the shape of the ground beneath.

Lasers Reveal 2,500-Year–Old Cities Underneath the Amazon Rainforest

The forest is rich and dense. (Photo: PXHIDALGO/Depositphotos)

These discoveries amount to five major and 10 minor complexes or cities previously unknown.

Frances National Center for Scientific Research (CNRS) has long been studying the nearby Sangay and Kilamope settlements.

This demonstrates the complexity of South American ancient technology was on par.

A lidar image of a street in the city of Kunguints underneath the Amazon in Ecuador.

The forest is rich and dense.