A satellite survey of Egypt has uncovered lost treasures including 17 pyramids and more than 1,000 tombs.Three thousand ancient settlements have also been located by scientists who studied infrared images which allowed them to see underground buildings. Astounded researchers on the ground have already confirmed that two of the pyramids exist - and they believe there are thousands more unknown sites in the region. Dr Sarah Parcak told the BBC: 'I could see the data as it was emerging, but for me the "a-ha" moment was when I could step back and look at everything that we'd found. 'I couldn't believe we could locate so many sites all over Egypt.' Buildings in ancient Egypt were constructed out of mud brick - the material is dense, allowing satellites orbiting 435miles above Earth to photograph the outlines of structures invisible to the human eye
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