Researchers find vast cityscape hidden under deep vegetation linking the Cambodian temples complex
Airborne laser technology has uncovered a network of roads and canals, illustrating the remains of a bustling ancient city linking Cambodia’s famed Angkor Wat temples complex.
The discovery was announced late on Monday in a peer-reviewed paper released early by the Proceedings of the National Academy of Sciences journal. The laser scanning revealed a previously undocumented formal urban planned landscape integrating the 1,200-year-old temples.
The Angkor temple complex, Cambodia’s top tourist destination and one of Asia’s most famous landmarks, was constructed in the 12th century. Angkor Wat is a point of deep pride for Cambodians, appearing on the national flag, and was named a Unesco world heritage site.
Archaeologists had long suspected that the city of Mahendraparvata lay hidden beneath a canopy of dense vegetation atop Phnom Kulen mountain in Siem Reap province. But the airborne lasers produced the first detailed map of a vast cityscape, including highways and previously undiscovered temples.
“No one had ever mapped the city in any kind of detail before, and so it was a real revelation to see the city revealed in such clarity,” University of Sydney archaeologist Damian Evans, the study’s lead author, said by phone from Cambodia. “It’s really remarkable to see these traces of human activity still inscribed into the forest floor many, many centuries after the city ceased to function and was overgrown.”
The technology, known as lidar, works by firing laser pulses from an aircraft to the ground and measuring the distance to create a detailed, three-dimensional map of the area. It is a useful tool for archaeologists because the lasers can penetrate dense vegetation and cover swaths of ground far faster than they could be analysed on foot. Lidar has been used to explore other archaeological sites, such as Stonehenge.