(BBC) – Researchers have found more than 60,000 hidden Mayan ruins in Guatemala in a major archaeological breakthrough.
Laser technology was used to survey digitally beneath the forest canopy, revealing houses, palaces, elevated highways, and defensive fortifications.
The landscape, near already-known Mayan cities, is thought to have been home to millions more Mayans than other research had previously suggested.
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The researchers mapped over 810 square miles (2,100 sq km) in northern Peten.