I've had these clipped off wherever they came from for ages, and finally glued them to (non-
GW) bases for stability and got to painting them.
....but I've forgotten where they came from. I'd assume they're from a
KT or
40k terrain set or boxed game - probably a little bit pre-pandemic, but they don't appear to be from Rogue Trader or
BSF - or anything else I can figure out...
I'm sure the Dakak brian trust will be able to pick it pretty easily, though...