![An infilled ringed cairn from the Khaybar Oasis in northwest Saudi Arabia.](https://abc17news.b-cdn.net/abc17news.com/2022/01/hypatia-h_682c4248f9187c23b955ee90942b6b5c-h_35d8e8c933f5de1366fb3aafc7bef763-300-375x225.jpg)
4,500 year-old avenues lined with ancient tombs discovered in Saudi Arabia
Jeevan Ravindran, CNN Archaeologists 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. In findings published in the
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