For centuries, the 5,200 mystery holes scattered across the Peruvian Andes have baffled archaeologists. These pits, each ...

The world's longest mountain chain stretches along the entire west coast of South America, but scientists have been struggling to explain how it formed. Published Dec. 1 in Nature, research led by ...

Explore Rainbow Mountain, a striking geological formation located in the high Andes near Cusco, Peru. Also known as Vinicunca ...

Scientists are a step closer to predicting when and where earthquakes will occur after taking a fresh look at the formation of the Andes, which began 45 million years ago. Published today in Nature, ...