These temporary camps overlap to a great extent. There is a different numbering sequence of these forts between Canmore and Roman Britain. The Roman Britain sequence is adopted here.
Camp 4. Temporary Camp (West Camp) 1,540? x 985 ft (470? x 300 m)
See: http://roman-britain.co.uk/places/alauna-veniconum.htm
http://roman-britain.co.uk/places/ardoch.htm
https://canmore.org.uk/site/25251/ardoch
https://canmore.org.uk/site/25389/ardoch
https://canmore.org.uk/site/25390/ardoch