During a field survey in 1988, researchers noted the presence of worked wood preserved within the peat, the kind of discovery that tends to prompt more questions than it answers.

The find was documented by Barry Raftery, a leading authority on Irish wetland archaeology, and recorded in his 1990 work. Worked wood in a peatland context is not unusual in itself; Irish bogs have preserved everything from butter to Bronze Age trackways, owing to the cold, acidic, oxygen-poor conditions that slow decomposition to near nothing. What makes the Annaghbeg material notable is precisely its ambiguity. The evidence recovered was judged insufficient to confirm the site as the remains of a deliberate structure or monument. That is not the same as saying nothing was there. It means the wood was shaped by human hands, but whether it formed part of a trackway, a platform, a dwelling, or something else entirely could not be established from what was visible. The site occupies that uncomfortable middle ground that wetland archaeology sometimes produces: a trace of human activity without enough context to explain it.