From Roman settlements near Rotherham in South Yorkshire to Second World War defences in Southampton in Hampshire, to secret Cold War military installations across England, for the first time, Historic England has made the results of over 30 years of aerial photograph mapping projects freely available online. Like a huge archaeological jigsaw puzzle, the map pieces together archaeological landscapes recorded during analysis of over 500,000 aerial photographs. More than half of England is covered by the map.
The map contains thousands of archaeological sites that have been identified on aerial photographs and from imagery derived from airborne laser scanning, also known as lidar data. Lidar uses laser light to create a 3D representation of the Earth's surface and is a newer technology that can be applied to the work of an aerial archaeologist.
Link to read the rest of this article and to the site from Historic England https://historicengland.org.uk/whats-new/news/new-virtual-aerial-map-allows-everyone-to-explore-englands-archaeology-from-the-air
