What we did is we used NASA topography data to map out the landscape, very subtle changes. We started to be able to see where the Nile used to flow.

If you look at the Nile on a map of Egypt, you don't think it has moved very much, but the river is very violent and has moved over time.

Archaeologists have used aerial photographs to map archaeological sites since the 1920s, while the use of infrared photography started in the 1960s, and satellite imagery was first used in the 1970s.

WorldView-3 goes into the mid-infrared wavelength, allowing you to see very subtle geological differences on the sites at a 0.4-metre resolution.

'Satellite archaeology' refers to the use of NASA and commercial high resolution satellite datasets to map and discover past structures, cities, and geological features.

My dream is to map every archaeological site in the world because, if we can do that, then we have this massive global data base that all sorts of global heritage organizations and heritage organizations within countries can use, and they can use that information to protect what's there.