Decades ago while driving from Carlisle to Haltwhistle just after dawn started to lift the fog, I suddenly came upon a stretch of the wall beside which a dozen or so men dressed as Roman soldiers were marching.
I think that it was a historical re-enactor group but for a moment I thought that I had driven back in time. England, Scotland and Wales have so much worth seeing. My four years there were not nearly enough to see it all.
#22 ...after dawn started to lift the fog
Nope, you were seeing real Roman troops that had stepped out of the Twilight Zone.