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
The Trough The Trough The Trough is a 6-mile long wooded gorge carved by the South Branch Potomac River (SBPR) and situated in the Allegheny Mountains of Hampshire and Hardy Counties, West Virginia, USA. The area was the site of a 1756 skirmish of the French and Indian War, known as the "Battle of the Trough". The steep slopes of the Trough are forested primarily with oaks, hickories, Virginia pine, large quantities of paw paw, with several rock outcrops visible on both sides. The two wooded ridges that define The Trough make it inaccessible from either side. Entry into The Trough is