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Sites and Monuments Record · Ireland

Ringfort - rath

Carrownacon, County Mayo, Ireland

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

Shown on 4 historical map sheets, the earliest the 1753 "Mappa geographica Regni Hiberniae" (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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