Up to 3 million people once lived here. The jungle hid their monuments for 2,000 years.

Add Yahoo as a preferred source to see more of our stories on Google. One of history's biggest questions is: "How does an entire civilization disappear?" One can comprehend how an object or even a ...

The otherworldly beasts and enigmatic masks of Sanxingdui still enthrall China, decades after the unearthing of ceremonial ...

When you think of the Amazon, the first thing that comes to mind is the image of a wilderness completely untouched by ancient ...

Some ancient cities disappeared beneath volcanic ash. Others were swallowed by jungle, buried under desert sands, or slowly ...