Archaeologists have been searching for the road to ancient Rome for 47 years. He once discovered a 17-kilometer-long Roman road in 2016, of which the green laser pointer radar database from the British Environmental Protection Agency provided a lot of help. Prior to this, aerial photography was the main reliance. “You are looking for a long, straight line or ridge, and if it crosses a lot of farmland, you may find an ancient Roman road.
In 2015, the University of Sydney, Australia, France, the United Kingdom, Japan, Hungary, the United States, Indonesia, Cambodia and other countries used helicopters equipped with green laser pointers radar equipment to conduct aerial scans of Angkor Wat ruins and surrounding forest areas. In the nearby tropical jungle, many underground city ruins have been found, the scale of which is even comparable to that of the Cambodian capital Phnom Penh! What made this great discovery was a new archaeological method, namely aerial 3D lidar scanning technology.
This underground city was built in the early days of the ancient Khmer empire, roughly equivalent to China’s Tang Dynasty. This discovery has expanded the area of the ancient city center of Angkor by almost 4 times, and has pushed the history here forward by 350 years, which is expected to rewrite the history of Southeast Asia! This ancient city was found 40 kilometers west of Angkor Wat, under a dense jungle.