The Whin Sill or Great Whin Sill is a tabular layer of the igneous rock dolerite in County Durham, Northumberland and Cumbria in the northeast of England. It lies partly in the North Pennines Area of Outstanding Natural Beauty and partly in Northumberland National Park and stretches from Teesdale northwards towards Berwick.
The Whin Sill at Crag Lough, showing Hadrian's Wall running along the top.
Northumberland is a ceremonial county in North East England, bordering Scotland. It is bordered by the Scottish Borders to the north, the North Sea to the east, Tyne and Wear and County Durham to the south, and Cumbria to the west. The town of Blyth is the largest settlement.
Image: Bamburgh MMB 55 Bamburgh Castle (edited, cropped)
Image: Morpeth Clock Tower July 2017 (cropped, edited)
Image: Blyth East Pier Lighthouse (48586306587)
Long Crag summit