Souterrain, Saintjohnstown (St. Johnstown Ed), Co. Donegal
On a hilltop overlooking the Foyle valley in Saintjohnstown, County Donegal, there once stood a single-ringed enclosure that has since vanished from the landscape.
Souterrain, Saintjohnstown (St. Johnstown Ed), Co. Donegal
Whilst the ringfort itself appeared on the 2nd edition Ordnance Survey 6-inch maps as DG063-004001, no physical trace of this ancient fortification remains today. The site’s elevated position would have offered commanding views across the river valley below, making it an ideal defensive location for its early medieval inhabitants.
What does survive, however, is an intriguing detail about the site’s hidden architecture. During its active period, someone discovered a section of souterrain near, though apparently outside, the ringfort’s perimeter. This underground passage, roughly four feet deep, featured an impressive flagstone roof with individual stones spanning about two yards in width. These subterranean chambers, common throughout Ireland during the early medieval period, likely served as storage spaces, refuges, or both for the ringfort’s occupants.
Unfortunately, the souterrain was filled in after its discovery, leaving only these documentary records of its existence. The information about this lost monument comes from the Archaeological Survey of County Donegal, compiled by Brian Lacey and his team in 1983, which catalogued the county’s field antiquities from the Mesolithic period through to the 17th century. Whilst the physical structures have disappeared, their inclusion in both historic maps and archaeological surveys ensures these glimpses of Donegal’s past aren’t entirely forgotten.





