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In Thailand, the researchers discovered traces of ancient human activity towards the top of the mountains. During the patrol in the province of Loey, the rangers discovered unusual signs near the PHu Khat peak, which rises 1307 meters above the sea level.
The two places, discovered only 300 meters from each other, received the common name by Pang Puey. They consist of linear cuts on the red-brown surfaces of the rocks, interrupted by light gray spots, formed by erosion and lichens.
Unlike natural cracks, lines form geometric or abstract models, which determined to classify them as examples of ancient rock, reports Noi.md with reference to
