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According to Nauka w Polsce, a laser scanner was installed on board the unmanned aerial vehicle. With his help, archaeologists have explored a large area covered with jungle. It is the dense vegetation that makes classical studies difficult. The research project started several years ago. Its purpose is to study the Chachabamba Inca ceremonial complex located in the Machu Picchu National Archaeological Park.
It is assumed that this complex was built at the beginning of the 15th century, but until recently it was not possible to confirm this. The fact is that most of the territory is covered with tropical forest. The researchers were helped to solve the problem by a laser scanning device, the so-called LiDAR. In the images obtained with this device, vegetation is not displayed, but those structures that are hidden under it are visible.
“As a result of our research, we were able to find a number of unknown structures in this park,” says Dominika Seckovskaya of the Andean Research Center at the University of Warsaw. According to her, the analysis of the photographs helped to establish that the central part of the ceremonial complex was a huge rock with altars, steps and a groove carved into it.
The latter, according to the assumptions of archaeologists, was used for some kind of liquid. It is possible that ritual drinks flowed down it, but it is possible that it could be the blood of sacrificial animals. There was a small square in front of the rock, along the edges of which several buildings were erected. Also, the square was surrounded by small ritual baths. In total, there were about one and a half dozen of them, they were used for ritual ablutions. Water was supplied to them using a fairly well thought-out system.