A 25cm resolution LiDAR model of the Parliamentarian bastion fort earthworks at Earith, Cambridgeshire. Constructed some time between 1643 - 1644. Note the unusual elongated outer hornworks designed to give covering fire to the flanks.
LiDAR from Environment Agency Geomatics
http://environment.data.gov.uk/ds/survey/#/survey
Processed and modelled with Planlauf Terrain software https://www.planlauf.com/en/planlaufterrain/download-purchase/