This appeared on FB and looked too good not to share. Details I have not, only that it's a wood yard and probably Scandinavian. The track may be standard gauge though the root loco is not. The main frames could be wood (of course) and I'm particularly taken with the nifty riveting in the wheel arch area.
Something similar could be knocked up on an uncontrollable 24mm Tenshodo - not ideal for shunting, but a great conversation piece.