As it turns out, it actually was there all along, just a little deeper. Here is a picture of the final clean up, with the elusive wall extending from the earlier segment (dry and on the right) to the new discoveries.
Elsewhere on the site other "bits and bobs" have turned up. Another brooch, the metal fittings for a spear handle, a couple of knife blades.
But overall the end of the week paired with more fine weather induces a sort of euphoria. The diggers get a little silly.
One team discovered a huge, ill shaped boulder plopped down in their area of road/roadside ditch. For some unfathomable reason this massive thing was quarried elsewhere, hauled with some effort into the fort---and dropped in a location guaranteed to be a persisting pain in the posterior. This hideous rock has been dubbed "the monster", and the picture below shows a digger vamping a bit like a Siren luring sailors to their doom....
But after a minute of reflection he concluded that in fact this was a different sort of artifact.
A two day break from archeology, various other nonsense will turn up in the interval.
Cheers from the Twice Brewed Inn.