Most henges do not contain standing stones ... slides as a slightly darker green line beyond the stones. The stones are made of local sandstone, which can be split into thin slabs. Located in Orkney, ...

They had Stone Age technology ... survived, so Orkney is already punching above its weight,” says Antonia Thomas, an archaeologist at the University of the Highlands and Islands.

Islands were sliding by in the North ... called "Mainland" and then go on unfettered by logic from there. But Orkney's trump card is history: Stone Age history, Viking history, World War naval ...