Any of the beautiful RA in Galloway. The effect of water, torch, flash, moonlight etc sometimes seem (to me) to point at some kind of nocturnal use. Many of the carvings are almost (or totally) invisible during the flat light of day.


Favourites are the Lagganmullan panels (there's a lot of them scattered across half a dozen fields) because of ease of access in the dark. A winter contender this year is the "spider" motif at Barharrow. I'd love to get a nice illuminated shot of that beastie in the dark.

http://www.themodernantiquarian.com/post/101909/barharrow.html

They've got to be easy to get to, so I've only been to a few, Arbor Low, Balnuaran of Clava, Swinsde, Branas uchaf, Castlerigg and Templewood. Branas Uchaf with Thesweatcheat, Castlerigg was during a Leonid meteor shower a long time ago, and Templewood on a clear Halloween night, also a long time ago now.
It is a bit more lunatic than the usual daylight visit, but if you like stones enough you'll want to see them in all varying lights and conditions.
I've done it before and I'll do it again.