Crannog in An Roisín Theas

In the E half of Maghery Lough, a small tidal lake located in a strip of coastal machair which is bordered to S by mountainous terrain. The lake is connected to a sea inlet at is N end. Beach-fringed Maghery Bay is c. 750m to W. Templecrone church (DG048-008001-) and Templecrone holy well (DG048-007----), associated with a ‘turas’ or pilgrimage route, are located on a broad peninsula c. 900m to NW. This small natural island is adapted to serve as a crannog, with a narrow causeway (DG056-005001-) of boulders connecting it to the mainland c. 30m to E. The island is rocky at base; the surface is grass-covered providing a relatively level, raised subcircular area (18-20m E−W; c. 23m N−S) suitable for habitation. On the E−S arc the outer edge of the island is reinforced by a rubble wall. The wall is evident as a loose jumble (Wth 2.5-3m; ext. H 1-1.4m) of large stones and boulders, which barely rises above interior ground level and slumps down to water level. The wall drops to a flat-topped stony ledge (Wth c. 1m) at a depth of c. 0.2m below water level, which projects outward from the island and appears to have a vertical drop into deeper water at its outer edge. The ledge appears to be a built feature, composed of stones, but it is algae-covered and cannot be examined closely. At NE and SW the rubble wall peters out, giving way to bedrock outcropping which provides a natural protective barrier on the W−N side of the island, rising to an almost vertical cliff (H c. 3m) at NW−NE. The interior space is thickly grass-covered. Protruding bedrock in the N third rises to a small peak, c. 1.5m higher than the rest of the interior, topped by a flat grassy area (diam. c. 5m). The remainder of the interior is relatively level, with an uneven surface and a slight slope down to S−SE. There is a low, partly grass-covered heap (diam. c. 2m) of stones in the S half. At the E edge of the island, a rectangular area (4m N−S; 2-2.5m E−W) is enclosed at S, W and N by a roughly built drystone wall, which post-dates the enclosing rubble wall. It is open to W where it faces the causeway. A single upright stone (H 0.8m; Wth 0.5m; T 0.15m) protrudes from the grass immediately to W of the rectangular enclosure. The causeway connects the island to a small rocky peninsula which projects into the E side of the lake, where there is a pocket of arable land. Notified to NMS by Michael Gibbons. Attached images: DG056-005001-_01.JPG Viewed from S DG056-005001-_02.JPG Viewed from SE DG056-005001-_03.JPG Viewed from E, with causeway (DG056-005002-) in foreground DG056-005001-_04.JPG perimeter wall at SE, viewed from W DG056-005001-_05.JPG perimeter wall, at SE viewed from E DG056-005001-_06.JPG terrace or ledge of stones beneath waterline DG056-005001-_07.JPG Enclosed rectangular space on E side of island Compiled by: Jane O'Shaughnessy Date of upload: 5 May 2022