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Sites and Monuments Record · Ireland

Ringfort - rath

Carrownacon, County Mayo, Ireland

Ordnance Survey six-inch map, 2nd edition (1888–1915) covering the location of Ringfort - rath, Carrownacon, 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
Carrownacon
County
Mayo
Country
Ireland
First-edition OS map
Not indicated
Latest-edition OS map
Not indicated
Coordinates
53.73587, -9.21380
SMR number
MA100-163----

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 pasture, located on a gentle E-facing slope on elevated ground bordering the SW side of Carrownacon Lough. The slope falls gently to a strip of level ground which stretches to the reed-fringed shores of the lake. This level ground is likely to have been inundated in the past when water levels were higher. There is an 18th-century house 50m to W.
This bivallate rath is not indicated on the OS 6-inch maps. It has been levelled and the remains are very low profile at ground level. A roughly circular area (37m E−W; 34m N−S) is defined by a bank, outside which there is a fosse with an external bank. The bank has been levelled to a broad, low undulation or rise (Wth 4-5m), which can still be traced on the N half, but is barely discernible on the S half. The fosse is evident at W−NE as a very shallow depression (Wth 2-3m) with an external bank, which has been levelled to a broadly slumped undulation (Wth 3-4m); they cannot now be traced elsewhere at ground level.
The interior is not noticeably raised relative to exterior ground level; it has a slight slope down to E, reflecting the natural fall of ground. There is a break (Wth 4-5m) in the inner bank at SE, possibly the location of an original entrance.
A shallow subcircular pit (diam. c. 2.5m; D 0.3m) cuts into the external bank at NE. Traces of levelled field boundaries can be seen to S and NE in the surrounding field; these define rectilinear field plots and appear to post-date the rath.
Another rath (MA100-057----) is located 330m to SE. A crannog (MA100-054----) is located 330m to N at the N end of the lake, and another crannog (MA100-055----) is located 250m to ENE on the E shoreline.

Notified to NMS by Jean-Charles Caillère

Attached images:
MA100-163----_01.JPG Viewed from N
MA100-163----_02.JPG Viewed from W

Compiled by: Jane O’Shaughnessy

Date of upload: 19 March 2021

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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