Rockall Helen's Reef (the latter was named in 1830). Notes Bibliography Rockall Rockall () is a British uninhabited granite islet located within the exclusive economic zone (EEZ) of the United Kingdom, situated in the North Atlantic Ocean. Its approximate distances from the closest large islands are: west of Scotland; northwest of Ireland; and 700 km (440 miles) south of Iceland. The nearest permanently inhabited place is North Uist, an island in the Outer Hebrides of Scotland, 370 km (230 miles) to the east. The United Kingdom claimed Rockall in 1955 and incorporated it as a part of Scotland in 1972. Ireland
The Trough Long Knob (1,725 feet) flanks the Trough. Sawmill Ridge ends at the mouth of the Trough at the point where Sawmill Run descends the ridge and joins the river. The communities of Sector and Glebe are located here to the west and east, respectively. The concrete piers of the old bridge that once carried Fleming-Sector Road (County Route 8/3) connecting these two communities are still visible here as well. A typical Trough canoe run ends at the Harmison's Public Access Site below the old bridge and behind The Trough General Store. The Trough is a popular canoeing/kayaking venue, although not