The supports for a Great Northern railway bridge that would have spanned Island Mor and the UK/EU border as it follows the River Foyle. Islandmore is a 100 acre Island in the middle of the River Foyle near Lifford & Straban. Islandmore is the setting for crime writer Brian McGilloway's book "The Nameless Dead". Island Mor, Co.Donegal / Co.Tyrone GPS. 54°51'15.894" N 7°27'35.294" W