Castlestrange:
Decorated "Celtic cult-stone"
M 820 597
Sheet 40
click
on the thumbnail for larger pictures 
This beautiful egg-shaped
stone, similar in material (granite) and style ("La Tène" curvilinear)
to the phallic one at Turoe in county Galway, lies beside
the avenue in Castlestrange Demesne (private estate), 2.4 km
NW of Athleague. Sixty cms high and 90 cms long it is decorated
all over with a continuous swirling pattern which is engraved
rather than carved in relief like the Turoe
stone. Since I first saw it in 1971 it has sadly deteriorated
due to national neglect.
Drumanone: Portal-tomb
G 767 023
Sheet 33
In a field immediately
N of the Sligo-Mullingar railway, to the N of the Boyle-Tobercurry
road, this tomb (also known as 'Tinnacarra Dolmen') comprises
a polygonal chamber and a huge roofstone measuring 4.5 by 3.8
metres, which has slipped back from unusually high (2.4 metres)
portal stones, between which is a massive doorstone entirely
blocking the entrance. The sides of the chamber are formed by
single stones, between which is a small, low boulder. The present
circular outline of the surrounding mound is due to cultivation.
Glenballythomas:
Souterrain and cave.
M 798 834
Sheet 33
1.6 km S of Rathcroghan
crossroads and approached by a tarred lane leading off the Rathcroghan-Lissalway
road, is the damp and magical Cave of Cruachú, known
also as Oweynagat or Cave of the Cat: a deep limestone
fissure into which the visitor may descend from a circular ring
(perhaps an Iron age burial place) through a dry-walled souterrain
some 3.6 metres long, roofed by large lintel-slabs, two of which
bear Ogam inscriptions. Only the most intrepid or foolhardy
should venture further.
The area around Rathcroghan crossroads is rich in earthworks
associated with Cruachain, seat of the Kings (i.e.warlords)
of Connacht, and scene of the ritual drinking-feast and king-making
marriage to the goddess Maeve (Medbh) known in England as Queen
Mab. The name Cruachain also refers to the North Roscommon
limestone plain.
~ 800 metres SE is
Knockannagorp (Hillock of Corpses) alias Dathí's Grave, a small
ring-ditch in the middle of which is a 1.8 metre high slab said
to mark 'the grave of the last pagan king of Ireland', an entirely
mythical personage. The significance of the stone remains a
mystery.
Scregg:
Passage-tomb
M 929 552
Sheet 40
4 km W of Lecarrow,
on a rocky knoll to the E of a by-road, is" The Cloghogle
Stone" (cloch togálach = raised stone) -a small
picturesque chamber 1.2 metres high inside, composed of single
slabs, is partly closed at the entrance by a stone 70 cms high.
The cairn has mostly disappeared.
~
3.5 km E by S, immediately to the W of the main Roscommon-Athlone
road near Lecarrow at Knockanyconor, is "Nellie's
Rock". Although not accepted as a sepulchre in the Megalithic
Survey - nor even listed among the doubtful - this striking
arrangement of stones is of interest -and seems to me to be
the disordered remnants of a court-tomb. One stone, apparently
a slipped roofstone, is 3.3.metres long; another is a little
smaller. Upright stones lean at various angles. The local name
may refer to a poor woman who, during the 19th century is said
to have reared a child under the great flat stone. A number
of megalithic tombs (and of course caves and rock-shelters)
were used as dwellings in "the most wretched country in
Europe" during the 19th century. And in France today many
upland chamber-tombs are used as shepherds' overnight shelters.

~ 15
km SSE (6 km WSW of Athlone) in Mihanboy
(M 986 403, sheet 47) is a ruined portal-tomb, originally supported
on portals 2.3 metres high, whose backstone has collapsed -
thus causing the roof-stone to slide back, taking the door-stone
with it.