ultrafacts:

Rockall is an uninhabited remote granite islet in the North Atlantic Ocean situated at the following rough distances from the closest large islands: 430 km (270 miles) north-west of Ireland, 460 km (290 miles) west of Great Britain and 700 km (440 miles) south of Iceland. It is within the United Kingdom’s exclusive economic zone. The nearest permanently inhabited place is North Uist, an island in the Scottish Outer Hebrides, 370 km (230 miles) to the east. 

Since the late 16th century, the rock has been noted in written records, although it is likely that some northern Atlantic fishermen knew of the rock before these historical accounts were made. In the 20th century, the location of the islet became a major interest due to the potential oil and fishing rights, spurring continued debate amongst several European nations.

(Fact Source) For more facts, follow Ultrafacts