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Sites and Monuments Record · Ireland

Souterrain

Ballyglass (Clanmorris By., Crossboyne Par.), County Mayo, Ireland

Ordnance Survey six-inch map, 2nd edition (1888–1915) covering the location of Souterrain, Ballyglass (Clanmorris By., Crossboyne Par.), County Mayo, with a pin at the register's coordinates
Ordnance Survey six-inch map, 2nd edition (1888–1915), covering this location. Courtesy of the National Library of Scotland. The pin is ours, placed from the register's coordinates.

The record

Townland
Ballyglass (Clanmorris By., Crossboyne Par.)
County
Mayo
Country
Ireland
First-edition OS map
Not indicated
Latest-edition OS map
Cave
Coordinates
53.63832, -8.98373
SMR number
MA119-021002-

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

4 historical maps cover this location, the earliest the 1753 map "Mappa geographica Regni Hiberniae" (David Rumsey Map Collection, Stanford Libraries).

Historical maps covering this location

  • 1753 · Mappa geographica Regni Hiberniae (David Rumsey Map Collection, Stanford Libraries)
  • 1790 · Composite: Ireland. (David Rumsey Map Collection, Stanford Libraries)
  • 1869 · Ireland. (David Rumsey Map Collection, Stanford Libraries)
  • 1891 · Ireland 16 (David Rumsey Map Collection, Stanford Libraries)

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This record in the National Monuments Service's Historic Environment Viewer ↗

The National Monuments Service's description

In a rath (MA119-021001-) which crowns a hillock named Cruckavilla on the 1915 OS 6-inch map.
This souterrain is indicated as ‘Cave’ in the W half of the rath on the 1915 OS 6-inch map. The visible remains consist of a passage extending E-W for 13-14m from W of centre towards the rath scarp at W; a short section of the passage is intact, the remainder is collapsed.
The intact section of the passage (L 3.5m E-W; Wth base 1.55m, top 0.97m; H 1.76m) is situated just W of centre in the rath. It has drystone walls and lintel roofing. The basal course of the wall consists of large, rough upright stones/slabs, above which are 5-7 courses of roughly square blocks. The wall incline inward slightly towards the top where a projecting corbel course supports massive roof lintels. The passage narrows (Wth 1.19m base, 0.94m top) at its E end. The roof lintels underlie c. 0.45m of soil and sod. The earthen floor is strewn with loose stones. The E and W ends of this section of passage are partly blocked by collapsed roof slabs. To W of this intact section, the passage is collapsed and delintelled, and is evident as a sod-covered depression (Wth 2.5m at E, 4m at W; D 1.3m), which extends for 9m to W, ending at the rath scarp.
Two large slabs built into a field wall at the base of the N slope of the hillock may be lintels robbed from the souterrain.

Compiled by: Jane O’Shaughnessy

Date of upload: 23 June 2023

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Sites and Monuments Record data: National Monuments Service, Government of Ireland, licensed under CC BY 4.0. Record text is reproduced unchanged. National Monuments Service, Government of Ireland · CC BY 4.0
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