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🔸Archaeologist have discovered a 4,500-year-old highway network in Saudi Arabia lined with well-preserved ancient tombs. Researchers from the University of Western Australia have carried out a wide-ranging investigation over the past year, involving aerial surveys conducted by helicopter, ground survey and excavation and examination of satellite imagery. The team has discovered roughly 18,000 tombs along the funerary avenues, with 80 of them being sampled or excavated for research.