Raghtin More (Irish: Reachtain Mhór) or Slieve Keeroge is a mountain with a height of 502 metres (1,647 ft) in Inishowen, County Donegal, Ireland. There is a megalithic cairn on its summit, which can be climbed from Mamore Gap. From the summit there is a view of Lough Swilly and the coast stretching to Malin Head.
Triangulation pillar on the summit