Dermot and Grania's Bed — Glentogher

This monument, c. 200m S of the last, is on generally level boggy ground just S of the valley of the Glentogher River. It is overlooked by higher ground closeby to the E and W. From the site there is a view of Lough Foyle at Quigley 's Point, 5km to the SE. Outcropping rock occurs in the vicinity. The monument, somewhat embedded in the bog, consists of a partly roofed gallery, c. 6m long, orientated almost SW-NE. A narrow opening at the NE end now allows access beneath the roofstones to the eastern two--thirds of the gallery. The western end lacks a roof and is blocked by tomb collapse. The gallery narrows from 1.75m wide at the W to c. 0.5m at the E, where the back is missing or remains concealed. The tallest sidestones at the W rise 0.9m above those at the E end. Two overlapping roofstones cover the mid-section of the gallery, and a partly concealed slab lying in front of the entrance may also have formed part of the roof. This measures 1m by at least 2.3m and is 0.2m thick. There appear to have been at least three lines of walling beyond each side of the gallery. A stone immediately outside the westernmost stone on the N side of the gallery and another immediately outside the fourth orthostat on this side seem to represent a doubling of the gallery side, as does a gapped line of four stones just outside the S side of the gallery. Between the westernmost of the latter four and the gallery side is another set stone. There are the remains of two additional lines of walling beyond both sides of the gallery. A leaning stone at the SW comer of the monument and another at the NW represent a ruined facade, and a fallen stone to the N of the latter may be another facade-stone. The structure stands in an oval, heather-grown, stony mound that is 10.7m long (E-W) and 8m wide near the W end, from where it narrows toward the E end. The mound rises to the height of the gallery sides. A number of displaced stones at the site are not shown on the plan. The design of the partly collapsed W end of the gallery is unclear. A transversely set stone stands between the western ends of the gallery sides. Its orthostatic character leaves some doubt about whether it served to divide the entrance or is the remnant of a closing feature. It leans inward and would stand 0.8m high if upright. Beside this at the N is a partly concealed small stone, 0.2m high. It is of uncertain status and is not hatched on the plan. Approximately 0.8m to the E and midway between the gallery sides is an orthostat measuring 0.8m in exposed height. The top of this stone is level with the tops of the sidestones at either side. Approximately 0.6m further to the E and set transversely to the line of the N side of the gallery is a jamb-like stone. This, measured at its inner face, is 1m high. It may indicate a division of the gallery into a portico, c. 1.7m long, and a main chamber. To the W of this stone and at right angles to its northern end is a small set stone that serves to strengthen the gallery wall. It is 0.3m long, 0.15m thick and 0.5m in exposed height. A displaced slab (not on plan), 1.5m by, 0.75m by 0.15m thick, leans against the jamb-like stone. The N side of the gallery is composed of seven orthostats and two smaller stones between the second and third orthostat from the W. The westernmost orthostat rises 0.5m, and that next to it 0.6m, above the collapsed material at this end of the gallery. The remaining five orthostats at this side are accessible beneath the roofstones. Their heights from W to E are 1m, 0.85m, 0.7m, 0.55m and 0.15m. The two orthostats at the E end are set inside the line of the others, thereby abruptly narrowing the gallery. The western one of the two small stones between the second and third orthostats is 0.15m long, at least 0.05m thick and 0.4m in exposed height. The eastern is 0.15m long, at least 0.05m thick and 0.15m high. The single stone outside the westernmost orthostat on this side, which, as mentioned, seems to represent a doubling of the gallery wall, is 0.4m in exposed height. The similarly positioned stone outside the fourth orthostat on this side is 0.3m high. There are eight stones in position on the S side of the gallery. The easternmost, like the two opposite on the N side, is set inside the line of the other seven, and the second orthostat from the front is set transversely to the long axis of the monument. The outer faces of all but the western three, which rise above the collapsed material at this end of the gallery, are concealed. The exposed heights of the three referred to, from W to E, are 0.9m, 0.3m and 0.4m. The remaining five, accessible beneath the roofstones, are, from W to E, 0.7m, 0.7m, 0.6m, 0.5m and 0.3m in exposed heights. The westernmost stone of the gapped line of four small stones doubling this side of the gallery is immediately outside the fourth gallery orthostat and is 0.15m in exposed height. The set stone between this and the gallery wall is 0.4m in exposed height. The second of the line of four stones is just outside the opposed ends of the fourth and fifth gallery orthostats, which diverge as they rise, and it blocks the gap thus caused. It rises just above the gallery side. The third of these stones serves the same function outside the opposed ends of the fifth and sixth orthostats and rises to around the height of the gallery side. The fourth, just over 1m to the E, is 0.15m in exposed height. The upper surface and parts of the perimeter of the two overlapping roofstones covering the middle portion of the gallery are obscured by peat. The western one overlies the outer end of the eastern. Both rest directly on the N side of the gallery, and at the S is a pad-stone (not on plan) between each and the gallery wall. The western one also rests on the jamb-like stone dividing the gallery and measures 1.4m long E-W by at least 1.8m. The eastern one measures 1.5m E-W by 2.2m. Both are over 01m thick. Outer-walling at the N side of the monument is represented by four partly concealed orthostats. That at the W, 0.8m beyond the front of the gallery, is 0.6m in exposed height. Just W of this the tops of two firmly set stones protrude above the surface. The eastern one measures 0.15m by 0.08m and is 0.15m in exposed height, and the western measures 0.2m by 0.05m by 0.08m high. Neither is definitely structural, and they are not hatched on the plan. The other three outer-wall orthostats here are set inside the line of the western one. These may represent an inner line of outer-walling. Partly concealed by peat, the biggest is 0.9m or more in length, and all are at least 0.1m thick. Their exposed heights from W to E are 0.05m, 0.15m and 0.4m. There also seem to have been two lines of outer-walling at the S, the inner represented by three stones and the outer by two stones at the W end of the structure. The two lines are up to 0.3m apart, and the inner one is 0.4m beyond the gallery side. The westernmost stone of the inner line is 0.35m in exposed height. The second, 0.2m to the E, is 0.2m high, and the third, 0.4m further E, is largely concealed and rises just above ground level. The western of the two stones outside these is 0.1m in exposed height. The eastern, 0.5m to the E and partly concealed, is 0.2m high. Two stones, 0.7m apart and c. 0.4m beyond the E end of the gallery, seem to be part of the outer-walling. The northern one is 0.2m high, and the southern is 0.15m high. Approximately 0.2m W of and parallel to this is a stone that may indicate a doubling of the outer-walling at this end of the gallery. It is 0.25m high. The facade-stone at the SW corner of the monument leans westward. It is 1.1m long and 0.2m thick and would stand at least l.1m high if upright. The second facade-stone, 2.2m to the N, leans more markedly westward. It is 0.8m long and 0.2m thick and would stand at least 0.9m high if upright. A stone to the N of this lies more or less flat and protrudes from the slope of the cairn. It is not clear whether this also