Laser scanning, "ghost quadrilateral" appears in the middle of the jungle

(NLDO) - LiDAR technology - using lasers to search for hidden structures - has helped Romanian scientists make a "shocking discovery in the Neamț forest".

A team led by the Romanian National Institute for Research and Development in Geophysics has released a mysterious image in which a laser beam revealed a quadrilateral structure emerging from the forest, next to a river in the Neamț district.

According to Heritage Daily , it is one of the ancient fortifications, belonging to fortified settlements that were built here 5,000 years ago.

The team described what they found in the forest as a "shocking discovery".

A mysterious structure appears thanks to a laser exploration tool - Photo: Geocad Services

The newly identified ancient settlements extend from Romania's Neamț Forest to the Subcarpathian region of Moldova.

“LiDAR scans show that most of the fortified sites are located in high areas, with good visibility and reinforced with ditches and even mounds to increase their defensive capabilities,” said Professor Vasile Diaconu from the Neamț National Museum Complex.

LiDAR is a surveying method that measures the distance to a target by illuminating it with an ambient laser and measuring the reflected pulses with a sensor.

The technique could help researchers "see" through tree canopies to create 3D maps of structures that have been hidden by layers of vegetation above for thousands of years.

Field measurements also revealed some ditches described as “impressive in size”, up to several hundred metres long, requiring a great deal of effort to construct.

It is estimated that these settlements were in use from the Neolithic to the Bronze Age.

The study also used the same non-invasive technology to examine a known structure in the aforementioned forest, called Neamț Citadel, a medieval fortress built in the 14th century.

Source: https://nld.com.vn/quet-laser-tu-giac-ma-hien-ra-giua-rung-ram-196250315083250765.htm