Slieve Croob

Slieve Croob

Slieve Croob rises to 534 m in the Dromara Hills of County Down, Northern Ireland. Its open summit looks across lower farmland towards the high Mournes, and the River Lagan begins on its slopes. The masts are conspicuous, but so are the wide views.

The transmitter-road ascent

Start at Dree Hill car park, J300453, west of the summit. Pass through the pedestrian gate and follow the surfaced service road uphill to its end near the transmitter buildings. Leave the road for the short, rough summit approach, using the stiles to reach the cairn and trig pillar. Return by the same route.

There are steep sections, and the final grass and rock can be muddy or slippery. The council leaflet calls this walk Moderate; OutmoreNI currently gives it a Strenuous desk-based grade. The road surface does not make the full summit route step-free: the summit approach has stiles and uneven ground.

Access and safety

Access is permissive and on foot. Dogs are not allowed, because sheep graze the open mountain. Keep to the road across the privately owned grazing land and use the summit stiles; keep out of the transmitter compounds. Service vehicles occasionally use the road.

The summit is exposed to wind and cold, with conditions potentially much worse than at the car park. Mud and wet grass need care, and winter snow or ice can make even the surfaced section slippery.

The longer Pass Loanin route starts at Finnis/Massford and crosses open mountain before joining the transmitter road. It is a different walk. The council leaflet advises using that open-hill section only in clear weather, when its waymarkers can be seen; it also includes boggy ground and public-road walking.

Views, rocks and heritage

Clear weather brings views of the Mournes, Lough Neagh, Belfast, the Ards Peninsula and Strangford Lough. The summit rocks are Silurian metasediments, including hornfels formed by heating beside the Devonian Newry Igneous Complex. They have a different geological history from the younger granite peaks to the south.

The cairn remains are associated with the name The Twelve Cairns. Their interpretation as an ancient burial monument is probable, not certain. Blaeberry Sunday, also called Cairn Sunday, is traditionally marked by a climb on the first Sunday in August.

The name is commonly interpreted as mountain of the hoof. Paul Tempan’s place-name research proposes lump-mountain, possibly retaining a Brittonic word related to Welsh crwb. The etymology remains disputed.

Planning the visit

Dree Hill has parking and a sculpture about the River Lagan, but no toilets. The approach from Finnis/Massford is narrow and partly single-track. Plan public transport to Dromara or Finnis through Translink and arrange the onward journey to the hill.

Slievenisky (446 m) and Cratlieve (429 m) are neighbouring Dromara Hills summits. These names identify nearby hills; the transmitter-road walk described here returns to Dree Hill without visiting them.