Fort Science: Ground Shapes Under Roman Forts

Two terrain images for each fort: real height contours, then humps and hollows after the main slope is removed. Source: EA 1 m DTM plus exact WallGIS fort polygons.

01. Segedunum Wallsend

Height range 4.785 m · slope 2.797% · long axis 157.14 deg

02. Pons Aelius Newcastle

Height range 16.441 m · slope 2.745% · long axis 179.68 deg

03. Condercum Benwell

Height range 9.159 m · slope 2.029% · long axis 22.69 deg

04. Vindobala Rudchester

Height range 4.595 m · slope 1.407% · long axis 11.81 deg

05. Onnum Halton Chesters

Height range 4.205 m · slope 0.953% · long axis 177.01 deg

06. Cilurnum Chesters

Height range 8.048 m · slope 4.643% · long axis 22.37 deg

07. Brocolitia Carrawburgh

Height range 8.151 m · slope 4.191% · long axis 170.83 deg

08. Vercovicium Housesteads

Height range 22.891 m · slope 11.816% · long axis 78.02 deg

09. Vindolanda Chesterholm

Height range 6.462 m · slope 1.697% · long axis 162.5 deg

10. Aesica Great Chesters

Height range 9.421 m · slope 8.175% · long axis 84.3 deg

11. Magna Carvoran

Height range 11.455 m · slope 4.502% · long axis 4.04 deg

12. Banna Birdoswald

Height range 8.79 m · slope 2.32% · long axis 161.21 deg

13. Camboglanna Castlesteads

Height range 7.147 m · slope 0.616% · long axis 54.52 deg

14. Uxelodunum Stanwix

Height range 8.629 m · slope 3.239% · long axis 43.81 deg

15. Aballava Burgh-by-Sands

Height range 6.264 m · slope 3.985% · long axis 6.8 deg

16. Coggabata Drumburgh

Height range 3.836 m · slope 3.907% · long axis 117.92 deg

17. Maia Bowness-on-Solway

Height range 10.026 m · slope 2.612% · long axis 70.2 deg