Sites and Monuments Record · Ireland
Crannog
Coarse Island, County Mayo, Ireland
The record
- Townland
- Coarse Island
- County
- Mayo
- Country
- Ireland
- First-edition OS map
- Coarse Island
- Latest-edition OS map
- Coarse Island
- Coordinates
- 54.07561, -9.24384
- SMR number
- MA039-033001-
Slide toward Today to fade the historical sheet and see the modern map underneath.
David Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford LibrariesDavid 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).
This record in the National Monuments Service's Historic Environment Viewer ↗
The National Monuments Service's description
In Lough Conn. An island (c. 65m N–S; c. 38m E–W), subtriangular in shape, named ‘Coarse Island’ is shown c. 230m from the E shoreline in the N half of Lough Conn on the 1838 and 1930 OS 6-inch maps. It is listed in the SMR (1991) and RMP (1997) as a possible crannog.
A drop in the lake water levels has exposed an expanse of dry land which has subsumed the island. The area is now densely covered in scrub. The original limits of the island can no longer be traced with any confidence; no material evidence, such as timbers or artificial accumulations of stones, are evident that might confirm that the island is a crannog.
A causeway-like feature (MA039-033002-) is depicted on the 1838 OS 6-inch map, connecting the island to the mainland at NW. This has also been subsumed into dryland, and overlain by a modern road/causeway.
Compiled by: Jane O’Shaughnessy
Date of upload: 4 February 2020
Nearby in the register
- Causewayunder 1 mi
- Enclosureunder 1 mi
- Burial groundunder 1 mi
- Churchunder 1 mi
Other entries of the same register within about three miles of this one, by straight line.