Mapping from aerial photographs

To be useful, the information from the aerial photographs (APs) needs to be drawn (plotted) onto maps.
We used to do this ourselves, but in the 1990s, English Heritage began a project to draw all the archaeological features appearing on APs onto Ordnance Survey maps.
This was called the National Mapping Programme. It is now virtually completed.
These days, if we are checking for archaeological sites likely to be damaged by new housing developments or road construction we look at the maps produced by the National Mapping Programme.

The lost village of Goltho (near Wragby)

Eg of Goltho aerial photo showing earthworks and corresponding mapped plan
Artistic interpretation of what Goltho may have looked like