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Sites and Monuments Record · Ireland

Ringfort - rath

Rathmacostello, County Mayo, Ireland

Ordnance Survey six-inch map, 2nd edition (1888–1915) covering the location of Ringfort - rath, Rathmacostello, 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
Rathmacostello
County
Mayo
Country
Ireland
First-edition OS map
Rathmacostello
Latest-edition OS map
Rathmacostello
Coordinates
54.06998, -9.37041
SMR number
MA038-034----

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 undulating average pasture, located on a rise or low ridge, with a fall of ground to SE overlooking an area of wettish pasture.
This rath is named ‘Rathmacostello’ on the 1838 and 1922 OS 6-inch maps. It consists of a raised circular area (28m E–W; 27.3m N–S) defined by a bank, with remnants of an external bank survive at SE–SW. The inner bank (Wth 4.3m at NW, 3.4m at SE; int. H 0.7m at NW, 0.35m at SE; ext. H 1.45m at NW, 1.55m at SE) is largely earthen but incorporate some stone. On the inner face at NW–N stones appear to be regularly set, suggesting the remnants of a kerb. The bank is generally low internally, especially at E–S, but it retains a well defined external slope.
An external bank (Wth 2.6m; int. H 0.4m) survives in an arc at SE–SW, coinciding with the natural break of slope of the ridge. It has been removed elsewhere, but a slight undulation can still be traced, outlining its original circuit W–NE. It is shown on the 1922 OS 6-inch map as a field boundary that encircles the rath, from which other field boundaries radiate to NE and SW. A broad, flat intervening gap (Wth 5m) intervenes between it and the inner bank. The gap does not resemble a fosse, and while a fosse may have existed, no surface depression or crop mark is evident to highlight its presence. It is possible that the external bank is a later feature rather than a primary enclosing feature of the rath.
The interior of the rath is level and featureless. There is a break (Wth 1.8m) in the bank at NE.

Compiled by: Jane O'Shaughnessy

Date of upload: 25 July 2019

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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