Or perhaps a souterrain. Or possibly neither, depending on which historical source you trust and how much weight you place on a note written in pencil. The site is a small puzzle in the official record, a place that seems to have been uncertain about its own identity almost from the moment anyone wrote it down.

The 1837 Ordnance Survey six-inch map places a well symbol roughly twenty metres to the north-northeast of where the monument is recorded, which already suggests some slippage between the physical feature and its cartographic representation. The monument itself does not appear on any OS historic mapping. By 1983, a field assessment found no surface remains whatsoever. More intriguing still is a marginal detail in the record: a note suggests that a souterrain, an underground stone-lined passage of the kind associated with early medieval settlement and used variously for storage, refuge, or ventilation, may have been marked at this location on an Ordnance Survey field map, but in pencil only, as though whoever made the notation was not quite sure enough to commit to ink. Whether that pencil mark referred to the same feature as the supposed well, or something else entirely, is unclear. Aerial photography confirms only that there is nothing visible at the surface today. The ground here is cut by a deep drain, and the boggy pasture has long since closed over whatever may or may not have been there.