The map covers more than half of the country. Duncan Wilson, chief executive of Historic England, said: "This new aerial archaeology ... Cropmarks form more easily on free draining soils.

According to Google, some new updates on the way to the company's satellite ... the historical satellite and aerial imagery, ...

Historic England analysed more than 9,500 aerial pictures and airborne laser scans to pinpoint map marks on the Downs to the north of Brighton. The results cover archaeological features from small ...