In 1986 the organisation was involved in a protest in the town of Monmouth when it became apparent that developers had not only discovered important archaeological remains but had already destroyed them.
Members of the society anticipated that more damage was to follow and the local council were implicated.
[2] The society ran the largest long standing urban amateur excavation in the UK, at 22–24 Monnow Street, Monmouth from 1990 to 2000.
The excavation found a medieval defensive castle ditch, a well with cesspit nearby, a Roman grave with standing stone marker, and possible evidence of a building along Monnow Street during the Dark Age.
Members include Stuart Wilson, Arthur Sockett and Dave Jemmett.