One of these nights I'm determined to kip on Simonside to see if these Duergar show themselves.

The holed stone I spoke of is mentioned in Paul Frodsham's recent book on Upper Coquetale. It's supposedly an enhanced natural feature, in that it's a sandstone boulder with a natural 1.6m hole running right the way through it. Some fellas from the Cardiology* dept of Newcastle's RVI have studied it for a while, and reckon it was carefully shifted and wedged at some point in prehistory to make the hole align to solstice sunrisey stuff, pointing to the mouth of the Tyne.

Someone was asking about it here a while back, and I mistook the question as being about millstones. Duh.

*Inexplicably...