World War II Heavy Anti-aircraft (HAA) gunsite near Bolton-upon-Dearne (South Yorkshire, UK), known as Station H17. The site was probably connected with the defence of Sheffield, which lies approximately 16km to the south west.
The monument survives as a series of standing, buried and earthwork remains. The HAA gun emplacements and command post are constructed out of concrete and breeze block and broadly follow standard designs.
https://historicengland.org.uk/listing/the-list/list-entry/1019872
The model was created from 185 drone aerial photographs.