Seventeen lost pyramids are among the buildings identified in a new satellite survey of Egypt. More than 1,000 tombs and 3,000 ancient settlements were also revealed by looking at infra-red images which show up underground buildings.
Initial excavations have already confirmed some of the findings, including two suspected pyramids.
The research led by Dr Sarah Parcak from the University of Alabama at Birmingham is featured in a BBC documentary, 'Egypt's Lost Cities.'
