Slieve Gallion (from Irish Sliabh gCallann, meaning 'mountain of the heights') is a mountain in County Londonderry, Northern Ireland. By road, it is 4 miles (6.4 km) from Moneymore, 8 miles (13 km) from Cookstown, and 8 miles (13 km) from Magherafelt. It is the eastern limit of the Sperrin Mountains range. It has 2 peaks: the southwestern peak at Glenarudda Mountain and Tintagh Mountain reaches a height of 528 metres (1,732 ft), and is the 397th highest peak in Ireland; the northeastern peak reaches a height of 496 metres (1,627 ft), and is the 469th highest peak in Ireland; it is also the furthest-east mountain-top in the Sperrins. The southwestern peak is in Cookstown District, and the northeastern peak is in Magherafelt District. The mountain is part of the parishes of Desertmartin, Lissan and Ballinascreen.
There's a trail leading to the summit.
By elevation Slieve Gallion is
# 12 out of 84 in Sperrins AONB # 43 out of 343 in Northern Ireland
By prominence Slieve Gallion is
# 3 out of 84 in Sperrins AONB # 11 out of 343 in Northern Ireland # 92 out of 2703 in the Mountains of Ireland
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