Rockall part of the deeply eroded Rockall Igneous Centre that was formed as part of the North Atlantic Igneous Province, approximately 55 million years ago, when the ancient continent of Laurasia was split apart by plate tectonics. Greenland and Europe separated and the northeast Atlantic Ocean was formed between them, eventually leaving Rockall as an isolated islet. The RV "Celtic Explorer" surveyed the Rockall Bank in 2003. The Irish Light Vessel "Granuaile" (the same name as the steamer on the RIA 1896 botany survey) was chartered by the Geological Survey of Ireland, on behalf of the Department of Communications, Marine and
Rockall for Kilmarnock, said: "More people have landed on the moon than have landed on Rockall." Rockall is one of the few pinnacles of the surrounding Helen's Reef; it is located 301.3 km, or 162.7 nmi west of the island of Soay, St Kilda, Scotland, and northwest of Tory Island, County Donegal, Ireland. Its location was precisely determined by Nick Hancock during his 2014 expedition. The surrounding elevated seabed is called the Rockall Bank, lying directly south from an area known as the Rockall Plateau. It is separated from the Outer Hebrides by the Rockall Trough, itself located within the Rockall