High in the Peruvian Andes, a ribbon of thousands of hand-dug pits marches across a barren hillside, so regular and extensive that it is visible from the air like a dotted scar. For decades, ...

For years, researchers have questioned who created the “band of holes” site in Peru. A new study suggests it was an ancient marketplace.

At a sprawling ceremonial complex in southern Mexico, archaeologists say they have identified a 3,000‑year‑old layout that appears to encode a vision of the universe in earth and stone. The site, ...