Prehistoric enclosed settlement known as South Kirkby Camp (West Yorkshire, UK), thought to date from between the Late Bronze Age to the Romano-British period (c.1000 BC-AD 400). The enclosure is defined by a bank and ditch. This survives best on the south west and east sides, where the bank is 10m wide and up to 1m high. The ditch is between 7m and 10m wide and up to 1.5m deep.
https://historicengland.org.uk/listing/the-list/list-entry/1018818
Tha model was created from 278 aerial photographs taken by drone.