Deep in Peru's Amazon rainforest stands Cerro El Cono, a mountain that looks almost too perfect to be real. Rising 1,310 feet ...

Deep in the Peruvian Amazon, near the border with Brazil, a striking landform has stirred scientific curiosity and cultural ...

Why it's incredible: El Cono stands alone in the rainforest and has a mysterious pyramidal shape. Cerro El Cono is a 1,310-foot-tall (400 meters), pyramid-like formation in the Amazon rainforest. It ...

The pyramid was built over 5,000 years ago, even before the pyramids of Egypt and Mesopotamia, a time when archeologists had believed the Amazon was populated only by hunter-gatherers.

Vast settlements dating back to the Middle Ages and featuring earthen buildings and pyramids as tall as eight-story buildings have been discovered hidden in the Bolivian Amazon, scientists said ...