Deep beneath Stonehenge, ground-penetrating radar has just exposed something that has left researchers baffled—an enormous, artificially aligned structure buried at a depth technology should not be able to detect. The scan, conducted as part of a routine conservation survey, revealed a perfectly geometric network of tunnels radiating far beyond the visible monument.

A new analysis of Stonehenge, carried out with the help of artificial intelligence, suggests the famous monument is part of a much larger network of buried structures than previously understood. Researchers fed years of ground-penetrating radar and magnetometer data into an AI program designed to identify patterns in the landscape. The program produced a three-dimensional map of the area and ident…

AI scanned Peru’s megalithic ruins and the findings left scientists stunned. For decades, researchers assumed the massive stone walls of sites like Sacsayhuamán were carved and fitted purely by manual labor.

Researchers using artificial intelligence have identified more than 300 previously unknown geoglyphs in Peru’s Nazca Desert, doubling the number of known symbols and raising new questions about the ancient culture that created them.The project, led by scientists from Japan’s Yamagata University, used machine learning algorithms trained on satellite imagery to detect subtle variations in soil color…