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 2. Temporary Camp. 875 x 700 ft (267 x 213 m) It is possible that it and Camp 3 or extensions of each other.
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